Question

what os root of a polynomial​

Answer 1

Step-by-step explanation:

The roots of a polynomial are those values of the variable that cause the polynomial to evaluate to zero.

For example, to find the roots of

3 x 2 − 27

We are trying find find what value (or values) of x will make it come out to zero. To do this we set the polynomial to zero in the form of an equation:

3 x 2 − 27 = 0

Then we just solve the equation. Add 27 to both sides:

3 x 2 = 27

Divide through by 3:

x 2 =

27

3

Take the square root of both sides:

x = √ 9

x = ± 3

So this polynomial has two roots: plus three and negative 3. Both will cause the polynomial to have a value of 3.