Question

Suatu fungsi kuadrat dinyatakan dengan g(x) = 6+4x-x^2. pernyataan di bawah ini salah, kecuali ....
a. g(3) = -10
b. g(-3) = 24
c. g(4) = 6
d. g(-5) = -64​

Answer 1

G(x) = 6+4x-x^2
a. g(3) = - 10, salah
g(3) = 6+4.3-(3^2)
g(3) = 6+12-9
g(3) = 10

b. g(-3) =24, salah
g(-3) = 6+4.-3-(-3)^2
= 6-12-9
= -15

c. g(4) = 6, benar
g(4) = 6+4.4-(4^2)
= 6+16-16
= 6

d. g(-5) = -64
g(-5) = 6+ 4.(-5) - (-5)^2
= 6-20-25
= -39

jawabannya c

Answer 2

Jawaban:

c. g(4) = 6

Penjelasan dengan langkah-langkah:

a.

g(x) = 6 + 4x - x²

g(3) = 6 + 4(3) - (3)²

g(3) = 6 + 12 - 9

g(3) = 9...........pilihan a salah g(3) = -10

b.

g(-3) = 6 + 4(-3) - (-3)²

g(-3) = 6 - 12 - 9

g(-3) = - 15.....pilihan b salah g(-3) = - 24

c.

g(4) = 6 + 4(4) - (4)²

g(4) = 6 + 16 - 16

g(4) = 6.........pilihan c benar g(4) = 6

d.

g(-5) = 6 + 4(-5) - (-5)²

g(-5) = 6 - 20 - 25

g(-5) = - 39.....pilihan d salah g(-5) = -64