factorise 16 x to the power 5 - 81x
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Answer: 16x^5-81x
=x (16x^4-81)
=x{(4x^2)^2-(9)^2}
=x (4x^2+9) (4x^2-9)
=x (4x^2+9) {(2x)^2-(3)^2}
=x(2x+3) (2x-3) (4x^2+9)
Step-by-step explanation:
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