Question

Jika h(x+2)=x^2+2x, maka h(x)=...

Answer 1

H(x + 2) = x² + 2x
h(x + 2 - 2) = (x - 2)² + 2(x - 2)
h(x) = x² - 4x + 4 + 2x - 4
h(x) = x² - 2x

Answer 2

H(x+2) = x²  + 2x
misalkan x+2 = a
x= a - 2
.
h(x+2) = h(a) = (a-2)² + 2(a-2)
h(a) = a² - 4a + 4 + 2a - 4
h(a) = a² - 2a
h(x) = x² - 2x