Question

factorise 8x^3_162x​

Answer 1

Answer:

Factors of 8x³

= 2 × 2 × 2 × x × x × x

Factors of 162x

= 2 × 3 × 3 × 3 × 3 × x

Common factors 2 × x = 2x

8x³ - 162x

» 2x(4x² - 81)

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See,

here x³ - x = x².

when we'll multiply them this will give us 8x³ again.

But we have to take the common factor only, as done upside.