SOLUTION: Is theI tried solving this problem: p^2 + 8p + 16 = 0 using the quadratic formula and got -4 for the answer. My teacher mark the problem wrong. Can you help me solve it

Question 273231: Is theI tried solving this problem: p^2 + 8p + 16 = 0 using the quadratic formula and got -4 for the answer. My teacher mark the problem wrong. Can you help me solve it
Answer by CharlesG2(834) (Show Source): You can put this solution on YOUR website!
p^2 + 8p + 16 = 0 using quadratic formula
ap^2 + bp + c^2 = 0

where a=1, b=8, c=16

(p+4)(p+4) = p^2 + 4p + 4p + 16 = p^2 + 8p + 16 (used foil)
The answers are -4 and -4 or just -4.

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