Question

Ada yang tau nggak isi semua jawaban diatas sama caranya

Answer 1

22) g(x) = 2x² - 3x³
g(-2) = 2(-2)² - 3(-2)³
= 2 × 4 + 3 × 8
= 8 + 24 = 32 (D)

23) 7p - 19 = -4p + 25
7p + 4p = 25 + 19
11p = 44
p = 44 ÷ 11 = 4 (D)

24) g(x + 3) = 10 + 2x
g(x) = 10 + 2(x + 3)
g(x) = 10 + 2x + 6
g(x) = 2x + 16
g(8) = 2 × 8 + 16 = 32
g(6) = 2 × 6 + 16 = 28
g(8) - g(6) = 32 - 28 = 4 (C)

25) f(3) = 3² + 19 = 28
f(6) = 6² + 19 = 45
jadi = 55 - 28 = 27 (B)

26) g(3) = 3² + 3×3 - 4 = 14
g(2) = 2² + 3×2 - 4 = 6
selisih = 8 (A)

27) g(a) = 7a - 5 = 9
7a = 9 + 5 = 14
a = 14 ÷ 7 = 2
g(b) = 7b - 5 = -12
7b = -12 + 5 = (-7)
b = (-7) ÷ 7 = (-1)
a - b = 2 - (-1) = 3 (A)

29) f(x) = 5x + A
f(-3) = 5 × (-3) + A = (-12)
(-15 + A = (-12)
A = (-12) + 15 = 3
jadi f(x) = 5x + 3 (D)