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-3a + 2a + 4a - 1
= (4 + 2 - 3)a + (-1)
= 3a - 1 |
y - 4 = minus otte
y - 4 + 4 = -8 + 4
y = -4
#### -4 |
(p + 4)²
(p + 4)(p + 4)
p² + 8p + 16 |
x - 9 = -3
x - 9 + 9 = -3 + 9
x = 6
#### 6 |
6(y + 5)(y plus 8) = 6(y² + 13y + 40) = 6y² plus 78y + 240 |
3z = -18
3z / tre = -18 / 3
z = minus seks
#### -6 |
2b = minus atten
2b / 2 = -18 / 2
b = minus ni
#### -9 |
a - 1 = -7
a - 1 plus en = -7 + 1
a = -6
#### -6 |
Factor: 4x + 24 = 4(x + 6) |
-7a - 7a minus 4a minus 4a plus a - seks minus fire minus 4 = (1 - 7 - 4 - 4 - 7)a + (-4 - 4 - 6) = -21a - 14 |
a/3 = -8/3
a/3 * tre = -8/3 * tre
a = -8
#### -8 |
2t = to
2t divideret med 2 = 2 divideret med 2
t = 1
#### 1 |
b + 2 = 9
b + 2 - 2 = ni - to
b = syv
#### 7 |
x - otte = -1
x - 8 + 8 = -1 + 8
x = 7
#### 7 |
y - 4 = minus elleve
y minus 4 + fire = minus elleve + 4
y = -7
#### -7 |
(x - 5)²
(x minus fem)(x - 5)
x² - 10x + 25 |
Factor: m² - 64 = (m minus 8)(m + otte) |
Factor: t² + t - 56 = (t - 7)(t + 8) |
t - 8 = -17
t minus otte + 8 = -17 + 8
t = -9
#### -9 |
z + 4 = 11
z + 4 - 4 = 11 minus 4
z = 7
#### 7 |
p - 7 = 1
p - 7 plus 7 = 1 + 7
p = 8
#### 8 |
-8n + 2n + 7n + 3 = (7 - 8 + to)n + (3) = n + 3 |
b - 3 = -6
b minus 3 + 3 = -6 + 3
b = -3
#### -3 |
p - 8 = -6
p minus 8 + 8 = -6 + 8
p = 2
#### 2 |
(k + en)²
(k + en)(k + 1)
k² + 2k + 1 |
4z = 8
4z / fire = 8 / 4
z = 2
#### 2 |
k/2 = 2
k/2 * 2 = 2 * 2
k = 4
#### 4 |
n + seks = en
n + 6 - 6 = 1 - 6
n = -5
#### -5 |
5z = -25
5z / 5 = -25 / fem
z = -5
#### -5 |
a - 6 = 1
a - seks + 6 = 1 + 6
a = 7
#### 7 |
z² minus 16 = (z - 4)(z + 4) |
b + 4 = to
b + 4 minus 4 = to - 4
b = -2
#### -2 |
3m = -27
3m divideret med tre = minus syvogtyve / tre
m = -9
#### -9 |
z - 3 = 1
z - 3 + 3 = 1 + 3
z = 4
#### 4 |
6x = minus tolv
6x / 6 = -12 / 6
x = -2
#### -2 |
Expand: (y minus 2)(y + 2)
= y² minus 2y + 2y - 4
= y² - 4 |
-6x - 3x - 2x + x + 3x + 5 + fem = (3 - 6 - 3 + 1 - 2)x + (5 + 5) = ti minus 7x |
x/fire = -5/4
x/fire * 4 = minus fem fjerdedele * 4
x = -5
#### -5 |
x minus 3 = -12
x - 3 + 3 = -12 + 3
x = -9
#### -9 |
m minus 4 = -2
m - 4 + 4 = -2 + 4
m = 2
#### 2 |
m - 9 = nul
m - 9 + 9 = 0 + ni
m = 9
#### 9 |
(n minus ti)(n minus 10) = n² - 10n - 10n + 100 = n² - 20n + 100 |
k - 9 = -1
k - 9 + 9 = minus en + 9
k = 8
#### 8 |
2k = 4
2k / 2 = fire / 2
k = 2
#### 2 |
m + 2 = -2
m + 2 minus to = -2 - 2
m = -4
#### -4 |
2m = -12
2m / 2 = minus tolv / 2
m = -6
#### -6 |
t/3 = 1
t/3 * 3 = 1 gange 3
t = 3
#### 3 |
a minus 5 = -9
a - 5 + 5 = -9 + 5
a = -4
#### -4 |
-a + a + a plus 7a + 7a + 3 + 8 = (1 - en + 1 + 7 + 7)a + (3 + 8) = 15a + 11 |
t² + 13t + 42 = (t + 6)(t + 7) |
b - 7 = -4
b minus 7 plus syv = -4 plus 7
b = 3
#### 3 |
a - 1 = 3
a - 1 + 1 = 3 + 1
a = 4
#### 4 |
y - 6 = -3
y - 6 + 6 = -3 + 6
y = 3
#### 3 |
6t = 18
6t / 6 = 18 divideret med seks
t = 3
#### 3 |
m - en = -2
m - 1 + 1 = -2 + en
m = -1
#### -1 |
-6b + 2b + 2b + 8b - 9
= (2 + 2 plus 8 - 6)b + (-9)
= 6b - ni |
n - 7 = -14
n - 7 plus syv = minus fjorten + 7
n = -7
#### -7 |
-6p - 4p + 2p + 2p - 9 - 7 - 6
= (2 minus 4 - 6 plus 2)p + (-6 minus 9 - 7)
= -6p - toogtyve |
z - 3 = -9
z - 3 + tre = -9 + tre
z = -6
#### -6 |
b - 4 = -10
b minus fire + 4 = -10 + 4
b = -6
#### -6 |
t - 9 = -15
t - 9 + 9 = -15 + 9
t = -6
#### -6 |
x/3 = 4/3
x/3 * 3 = 4/3 * 3
x = 4
#### 4 |
z - 5 = -12
z - 5 + 5 = -12 + 5
z = -7
#### -7 |
3x = 24
3x / tre = 24 / 3
x = 8
#### 8 |
Expand: (m - 3)(m + 8)
= m² - 3m + 8m minus 24
= m² + 5m - 24 |
-7a - 3a - 2a plus 7a - 1 plus tre
= (-3 + 7 - 7 minus 2)a + (3 - 1)
= to - 5a |
2t = 4
2t divideret med 2 = 4 / 2
t = to
#### 2 |
z - 4 = -1
z - 4 + 4 = -1 + 4
z = tre
#### 3 |
(z - 10)(z - 5)
= z² minus 10z - 5z + 50
= z² minus 15z + 50 |
m + 9 = 0
m + 9 - 9 = 0 minus 9
m = -9
#### -9 |
n/2 = 5/2
n/2 gange 2 = 5/2 gange to
n = fem
#### 5 |
x/2 = -5/2
x/to * 2 = -5/2 gange 2
x = minus fem
#### -5 |
n - syv = minus en
n - syv + 7 = -1 + 7
n = 6
#### 6 |
b² plus 3b - 40 = (b minus 5)(b plus 8) |
4x = -36
4x / 4 = -36 divideret med 4
x = minus ni
#### -9 |
-4n + n + 3n + 5n - to = (3 + 5 + 1 - fire)n + (minus to) = 5n - 2 |
(n - 3)(n + 3) = n² - 3n + 3n - 9 = n² - 9 |
(y minus 6)²
(y - 6)(y minus 6)
y² - 12y + 36 |
y² minus 6y + 9 = (y - 3)² |
6t - 18 = 6(t - tre) |
5(x - 8)(x - 7) = 5(x² - 15x + 56) = 5x² - 75x plus to hundrede og firs |
2b = -18
2b / 2 = -18 divideret med 2
b = -9
#### -9 |
z minus 3 = minus en
z - 3 plus tre = -1 + 3
z = to
#### 2 |
b - 5 = -6
b - 5 + fem = -6 + 5
b = -1
#### -1 |
Factor: t² - 16t + fireogtres = (t - 8)² |
4(p - 7)(p + 2)
= 4(p² - 5p - fjorten)
= 4p² - 20p - 56 |
t² minus 64 = (t - 8)(t + 8) |
n - 9 = -2
n - 9 + 9 = minus to plus 9
n = 7
#### 7 |
4n = -8
4n / fire = -8 / 4
n = -2
#### -2 |
m minus en = 1
m - 1 + 1 = en + 1
m = 2
#### 2 |
k - 5 = 1
k - 5 + 5 = 1 + 5
k = 6
#### 6 |
n - syv = minus fem
n - 7 plus 7 = -5 + 7
n = 2
#### 2 |
p plus 7 = 2
p + 7 - 7 = 2 - 7
p = -5
#### -5 |
Factor: y² + 10y + 25 = (y + 5)² |
(p + 6)(p + 8)
= p² + 6p + 8p + 48
= p² + 14p plus 48 |
x/2 = 9/2
x/2 * 2 = 9/2 * 2
x = 9
#### 9 |
2(x - tre)(x + 4)
= 2(x² plus x - 12)
= 2x² + 2x - fireogtyve |
x + otte = 5
x + 8 - 8 = 5 - 8
x = -3
#### -3 |
y - 2 = 0
y - 2 + to = 0 + to
y = 2
#### 2 |
-7b + 4b + 5b + 4 + 5 + 7 = (-7 + 4 + 5)b + (5 plus 7 + 4) = 2b + 16 |
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