Question

Nomor tiga mohon yaaa

Answer 1

Verified answer

F(x) = ax² + bx + 6

f(-2) = 0
a(-2)² + b(-2) = -6
4a - 2b = -6
2a - b = -3 ... (1)

f(1) = 15
a + b = 15 - 6
a + b = 9 ... (2)

2a - b = -3
a + b = 9
--------------- (+)
3a = 6
a = 2 ✔

a + b = 9
2 + b = 9
b = 7 ✔

Rumus fungsi
f(x) = ax² + bx + 6
f(x) = 2x² + 7x + 6