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xl2 - 3x + 2x -6
xl2 -x - 6
b. ( 2x-3) (x+4 )
2xl2+ 8x - 3 x -12
2xl2 + 5x - 12
c. (4k + 1 ) l2
(4k+1)(4k+1)
16kl2 + 4k + 4k + 1
16kl2 + 8k + 1
d. ( 3m + 2n) ( 3m-2n)
9ml2 - 6nm + 6 nm - 4 nl2
9ml2 - 4nl2
e. (3-a)(5+a)
15 + 3a-5a - al2
15 - 2a -al2
f. (2+a)(al2-2a+1)
2al2-4a +2+ al3-2al2 +a
2al2-2al2 -4a +a +2 + al3
- 3a +2+ al3
Keterangan : l = pangkat