Question

Multiply and verify the results by taking a=-1,b=2 and c=1.
(a) 4ab(3a-2b)
(b) a³(7ab+c)
(c) (5a-2b)(3b+4c)
(d) (a+b+c)(3a²+2b²-c²)​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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