1.)What is the only solution of 2x^2 + 8x = x^2 – 16?
If you would like to solve the equation 2 x^2 + 8 x = x^2 - 16, you can calculate this using the following steps:
2 x^2 + 8 x = x^2 - 16
2 x^2 - x^2 + 8 x + 16 = 0
x^2 + 8 x + 16 = 0
(x + 4) (x + 4) = 0
x = - 4
The correct result would be x = - 4.