Tractice writing as a qua
ASSIGNMENT
Use substitution to write an equivalent quadratic equation.
(3x + 2)^2+ 7(3x + 2) - 8 = 0
DONE

Step-by-step explanation:

Define ...

  z = 3x+2

Substitute for that expression in the given quadratic:

  z^2 +7z -8 = 0 . . . . . . your equivalent quadratic

This equation is easily solved by factoring:

  (z +8)(z -1) = 0

  z = -8 or +1

Then x can be found from z:

  (z -2)/3 = x

  (-8 -2)/3 = x = -10/3

  (+1 -2)/3 = x = -1/3

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it