Question

If (x)=x^2+2x-5. What is f(a+1)

Answer 1

Answer:

a^2+4a-2

Step-by-step explanation:

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

f(a+1) = (a+1)^2 + 2(a+1) -5

        = a^2 + 2a + 1 + 2a +2 -5

       =a^2+4a -2