Question

find the zeros of 9x^3-36x​

Answer 1

Given that,

A polynomial, $9x^3-36x$

To find,

The zeroes of the polynomial.

Solution,

Let $f(x)=9x^3-36x$

To find zeroes put f(x)=0

So,

$9x^3-36x=0$

Taking 9x common

$9x(x^2-4)=0\\\\9x=0, x^2-4=0\\\\x=0, x^2=4\\\\x=0,x=\pm 2$

So, the zeroes of f(x) is 0,2,-2.