4. Multiply the following monomials by trinomials:
4.
(a) (-5b2) by [4/5b2 +3b -1]
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Answer:
=(-5b2) by [4/5b2 +3b -1]
=(-5b2) by [4/5b2 +3b -1]= -4+3b-1
so the correct answer is -4+3b-1
(for explanation see attachment) cancelled
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