Question

Peke penyelesaiaannnnnn nya yaaa

Answer 1

F(2x) = 4(2x) + 7 = 8x + 7
g(x + 1) = (x + 1)^2 - 1 = x^2 + 2x + 1 - 1 = x^2 + 2x

f(2x) - g(x + 1)
= 8x - 7 - (x^2 + 2x)
= -x^2 + 6x - 7