SOLUTION: 6.
Solve the quadratic equation x2 + 16x = -64 by factoring.
A. {2, 4}
B. 8
C. {-8, 8}
D. -8
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Question 798449: 6.
Solve the quadratic equation x2 + 16x = -64 by factoring.
A. {2, 4}
B. 8
C. {-8, 8}
D. -8
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
x2 + 16x = -64
x2 + 16x + 64 = 0
Find two numbers that multiplies to give you 64 and combined to give you 16:
(x+8)(x+8) = 0
.
solution:
x = -8 (answer D)
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