Answer:
(x²-2x+)(2x-1)=
=2x³-4x²-x²+2x=
=2x³-5x²+2x
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(5a²b-4b³) (2a²-ab)=
=10a⁴b-8a²b³-5a³b²+4ab⁴
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(x+1)(x-2)(x+3)=
=(x²+x-2x-2)(x+3)=
=(x²-x-2)(x+3)=
=x³-x²-2x+3x²-3x-6=
=x³+2x²-5x-6
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(2a-1)(3a+2)-(3a-4)(a+2)=
=6a²-3a+4a-2-(3a²-4a+6a-8)=
=6a²+a-2-(3a²+2a-8)=
=6a²+a-2-3a²-2a+8=
=3a²-a+6
I HOPE IT HELPS TO YOU
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