12a2b+8ab2
a=3 b=-2 c=5
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2
Answer:
8a³-b³-12a²b+6ab
2a³-b³-3×(2a)²(b)+3×2a×b²
(2a-b)³
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0
12×3×2×-2+8×3×-2×2
= -144+-96
=-240
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