4x to the power 3 - 81x
=x(2x+9) (2x-9)
HOW??
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1
Answer:
x=0
Step-by-step explanation:
4x^3 - 81x = x(2x+9) (2x-9)
x • (4x^2 - 81) = x(2x+9) (2x-9)
X × x(2x+9) (2x-9) = x(2x+9) (2x-9)
X = 0
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