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Factor completely: 16x2 − 81
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5 votes
Factor completely: 16x2 − 81

User ZachS
by
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2 Answers

2 votes
Simplify 16*2 = 32
32-81= -49
User Jiggysoo
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6 votes
16x² - 81 = (4x)² - (9)² = (4x - 9) (4x + 9)
User Meeker
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