1.pemfaktoran dari 12 + 5x - 2x² adalah..........
a. (4-x) (3-2x)
b. (4-x) (3+2x)
c. (4-2x) (3+x)
d. (4+2x) (3-x)
a. (4-x) (3-2x)
b. (4-x) (3+2x)
c. (4-2x) (3+x)
d. (4+2x) (3-x)
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Verified answer
Kelas 8 MatematikaBab Operasi Aljabar
12 + 5x - 2x²
= 12 + 8x - 3x - 2x²
= 4 (3 + 2x) - x (3 + 2x)
= (4 - x) (3 + 2x)