Simplify: 4a ^ 2 - 8a * (a - 1) - 7a * (1 + 5a) + a(a - 1) plz fast
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Answer:
16(2a -1)
Step-by-step explanation:
4a ^ 2 - 8a * (a - 1) - 7a * (1 + 5a) + a(a - 1)
=4a ^ 2 - 8a ^ 2-8a - 7a +35a ^ 2 + a ^ 2-a
=4a ^ 2 - 8a ^ 2+35a ^ 2 + a ^ 2-8a - 7a -a
=32a ^ 2 -8a - 7a -a
=32a ^ 2 -16a
=16(2a -1)
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