Question

Use substitution to write an equivalent quadratic equation.

(3x + 2)2 + 7(3x + 2) – 8 = 0


ANSWER IS ✔ u² + 7u - 8 = 0, where u = 3x + 2

Answer 1

it's u^2+7u-8=0 where u=3x=2

AKA the second one down