Question

Jika f(x)= x²+x-1 maka f(x+1)=

Answer 1

F(x + 1) = (x + 1)² + (x + 1) -1
= x² + 2x + 1 + x + 1 - 1
= x² + 3x + 1

Answer 2

F(x)=x^2+x-1
f(x+1) ?

--->

f(x+1)= (x+1)^2+(x+1)-1
= x^2+2x+1+x+1-1
=x^2+3x+1

semoga membantu:)