Question: how to solve a quadratic equation that cannot be factored?
Answer: 3 Sometimes, a quadratic equation cannot be factored Example: x 2 + 7x + 3 = 0 There is not a pair of numbers that multiply to give us 3, that will also add up to 7. ... 
4 The Quadratic Formula can be used to solve for x on ANY quadratic equation ax 2 + bx + c = 0 X = -b ± b 2 – 4ac 2a.