Question

If f(x)=3x^2-2 and g(x)=4x+2, what is the value of (f+g)(2)

Answer 1

$(f+g)(x)=3x^2-2+4x+2=3x^2+4x\\\\(f+g)(2)=3\cdot2^2+4\cdot2=12+8=20$