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OpenStudy (anonymous):
Solve Equation 4r^3-16r=0
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OpenStudy (zepp):
Can you factor that 4r^3-16r?
OpenStudy (zepp):
(4r)(r^2-4) = 0 Divide by 4r r^2-4=0 By using the quadratic formula, r = 2 or -2
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