Given the function f(x)=x2+3x−4, express f(x+2) as an equation.
Simplify the equation to get f(x+2)=x2+7x+6
Step 1 :Substitute x+2 into the original function f(x), we get f(x+2)=(x+2)2+3(x+2)−4
Step 2 :Expand the equation to get f(x+2)=x2+4x+4+3x+6−4
Step 3 :Simplify the equation to get f(x+2)=x2+7x+6