Question

What are the zeros of the polynomial function? f(x)=x2+9x+20 Enter your answers in the boxes. The zeros of f(x) are and .

Answer 1

-4 and -5

Explanation:

Answer 2

zeros of f(x) are -4 and -5

Explanation:

`f(x)=x^2+9x+20\\\\on\ using\ splitting\ the\ middle\ term\\\\f(x)=x^2+4x+5x+20\\\\f(x)=x(x+4)+5(x+4)\\\\f(x)=(x+5)(x+4)\\\\f(x)=0\\\\implies\ that\\x=-4 \ and x=-5`

hence, zeros of f(x) are -4 and -5