if 4 x + y = 34 , 2 x - y = 20 , for integers of x and y , y ^ 2 = ?
4 x + y = 34 2 x - y = 20 6 x = 54 x = 9 y = - 2 y ^ 2 = 4 answer is b
power(subtract(multiply(2, divide(add(34, 20), add(4, 2))), 20), 2)