Question

Solve using factoring.
x^2=6x+7

Answer 1

Answer:

$x {}^{2} = 6x + 7 \\ x {}^{2} - 6x - 7 = 0 \\ x {}^{2} - 7x + x - 7 = 0 \\ x(x - 7) + 1(x - 7) = 0 \\ (x - 7)(x + 1) = 0 \\ x - 7 = 0 \: \: \: \: \:or \: \: \: x + 1 = 0 \\ x = 7 \: \: \: \: \: \: or \: \: \: \: x = - 1$

so x = 7 , -1