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OpenStudy (anonymous):
Solve for x: 16x^2 − 81 = 0 A. x = 4, 9 B. x = −4, −9 C. x = 9 over 4, x = −9 over 4 D. x = 81 over 16, x = −81 over 16
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OpenStudy (anonymous):
Factor it you'll get (4x-9)(4x+9)=0 solve for x for both equations, x = 9/4 and x = -9/4
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