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200ВиОлЕтТA002
@200ВиОлЕтТA002
August 2022
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Упростите выражения:
1. 4a(a-2)-(a-4)^2
2. 2(b+1)^2-4b
Разложите на множители:
1. -3a^2-6ab-3ab^2
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гюйс
Verified answer
1)
4а(а-2)-(а^2-8а+16)=4а^2-а^2-8а+8а-16=3а^2-16
2)
2(b^2+2b+1)-4b=2b^2-2b+2=2(b^2-b+1)
3)
-3а^2-6ab-3ab^2=-3a(a+2b+b^2)
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Answers & Comments
Verified answer
1)4а(а-2)-(а^2-8а+16)=4а^2-а^2-8а+8а-16=3а^2-16
2)
2(b^2+2b+1)-4b=2b^2-2b+2=2(b^2-b+1)
3)
-3а^2-6ab-3ab^2=-3a(a+2b+b^2)