What is the standard form of $y=x^3(x^2 - 16)$ ?

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Answer 1 · 2016-01-04T19:01:04

$x^5 - 16x^3$

expand bracket and write terms in descending powers of x.

$x^3 xx x^2 - x^3 xx 16$

$= x^5 - 16x^3$

What is the standard form of y=x^3(x^2 - 16) y=x^3(x^2 - 16) ?