Question

What are the roots of the polynomial equation? x2+11x−80=0

Answer 1

The roots would be x=5,16

Answer 2

Answer: The roots of the polynomial equation are 5 and -16.

Step-by-step explanation:

Since we have given that

$x^2+11x-80=0$

So, we need to find the roots of the polynomial equation:

We will use "Split the middle term":

$x^2+11x-80=0\\\\x^2+16x-5x-80=0\\\\x(x+16)-5(x-16)=0\\\\(x-5)(x+16)=0\\\\x=5,-16$

Hence, the roots of the polynomial equation are 5 and -16.