(3a + 2b - 4c)(4a + 5b – 3c)
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Answered by
2
Answer:
(3a+2b-4c)(4a+5b-3c)
3a(4a+5b-3c)+2b(4a+5b-3c)-4c(4a+5b-3c)
12a²+15ab-9ac+8ab+10b²-6bc-16ac-20bc+12c²
12a²+10b²+12c²+15ab+8ab-9ac-16ac-6bc-20bc
12a²+10b²+12c²+23ab-25ac-26bc
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