Michigan State University - Diagnostic Exam

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2.3

  •   Solve the equation w(w + 2) = 3(w + 2) for w.

     

    a) w = -2 b) w = ±2 c) w = -2 or 3 d) w = 2 e) w = 3



Solution:
⇒w2 + 2w = 3w + 6 ⇒ (w - 3)(w + 2) = 0 ⇒ w = - 2, 3

Diagnostic:

If you miss this question please review quadratic equations.

See 1.9: Factoring (Polynomials) . Also, see 2.4: Equations (Quadratic)

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July 15, 2008