Question

Diketahuai f(x) = x pangkat 2 + 4
A. hitunglah f(0), f(2), f(4) dan f(6)
B.jika f(a) =13, tentu nilai a yang memenuhi

Answer 1

F(0) = (0)²+4 = 4
f(2) = (2)² + 4 = 4 + 4 = 8.
f(4) = (4)² + 4 = 16 + 4 = 20
f(6) = (6)² + 4 = 36 + 4 = 40


f(a) = (a)² + 4
13 = a² + 4
13 - 4 = a²
9 = a²
3 = a