Question

Can anyone help me on this?

Answer 1

`x = 1, -5`

Explanation:

`f(x) = x^2 +4x - 5`

Factor the expression. Factoring is the process of writing out an expression by using other expressions such that when the other expression are multiplied together, the resulting expression is the initial expression.

`f(x)=x^2+4x-5`

`f(x)=(x+5)(x-1)`

Now set the expression equal to zero to find the roots (also known are zeros) of the expression. Use the zero product property to find the answers, the zero product property states that any number times zero is zero.

`0=(x+5)(x-1)\\`

`x=-5,x=1`