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Question
Multiply: 2m2 − 3m − 1 and 4m2 − m − 1
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Solution
(2m2 − 3m − 1) (4m2 − m − 1)
= 2m2(4m2 − m − 1) − 3m(4m2 − m − 1) −1(4m2 − m −1)
= 8m4 − 2m3− 2m2 − 12m3 + 3m2 + 3m − 4m2 + m + 1
= 8m4 − 14m3 − 6m2 + 3m2 + 4m + 1
= 8m4 − 14m3 − 3m2 + 4m + 1
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