Question

No. 16-17 please bantuin butuh jalannnya!! Besok.dikumpulr

Answer 1

17) 
x² - 5x + 6= 0
(x - 3)(x -2) = 0
x = 3 atau x = 2
α > β --> α = 3 dan  β = 2

nilai α³ - 2 αβ + β³ = 3³ - 2(3)(2) +2³ = 23

18) 
f(x) = x² + x - 12
a = 1, b = 1 , c = -12
a = 1 --> a > 0
d=b²-4ac --> d = 1²-4(1)(-12) = 49 --> D > 0
krn a > 0 dan D > 0 --> kurva memotong sub x di dua titik