Question

How do you solve x2x−4(−)7x−4=0?

Answer 1

$2{x}^{2} + 28x - 4 = 0 \\ x { }^{2} + 14x - 2 = 0 \\ {x}^{2} + 7x - 2x - 14 = 0 \\ (x + 7)(x - 2) = 0 \\ x = 2 \\ x = - 7$