Sunday, October 13, 2019

Kunci Jawaban Try Out 2 Buku Sukino Kelas XII no 6

Soal dan Pembahasan Try Out 2
Buku Sukino
Matematika Peminatan
Kelas XII
Kunci Jawaban Try Out Sukino

6. Suku banyak x3 + 3x2 + 9x + 3 habis membagi suku banyak x4 + 4x3 + 2ax2  + 4bx + c. Nilai dari ekspresi (a + b + c) sama dengan ...

a. 12
b. 10
c. 9
d. -10
e. -12

Jawaban : A

habis membagi suku banyak artinya sisa bagi = 0

sisa bagi :
(2a - 9-3) = 0
2a - 12 = 0
2a = 12
a = 6

(4b - 3-9) = 0
4b - 12 = 0
4b = 12
b = 3

c - 3 = 0
c = 3

a + b + c = 6 + 3 + 3 = 12


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