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OpenStudy (anonymous):
Factor completely: x^2 + 16x + 64
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jimthompson5910 (jim_thompson5910):
find two numbers that multiply to 64 and add to 16
OpenStudy (anonymous):
8?
jimthompson5910 (jim_thompson5910):
8 and what else
OpenStudy (anonymous):
Yep :) so now plug that into your foil equation (x+#)(x+#)
OpenStudy (anonymous):
8*8=64 8+8=16
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jimthompson5910 (jim_thompson5910):
so it factors to (x+8)(x+8) or (x+8)^2
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