Question

Determine if (x+1) is a factor 4x^2 + 2x - 5

Answer 1

we have the quadratic expression

4x^2 + 2x - 5

Remember that

If (x+1) is a factor of the given expression

then

the value of the expression at x=-1 must be equal to zero

so

Verify

For x=-1

4(-1)^2+2(-1)-5=4-2-5=-3

therefore

(x+1) is not a factor