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karinameowww
@karinameowww
July 2022
1
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(a-b)^2-(a-2b)*(a+2b) упростить выражение
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krugly1981
A^2 - 2ab + b^2 - ( a^2 - 4b^2) = a^2 - 2ab + b^2 - a^2 + 4b^2 =
= 5b^2 - 2ab
3 votes
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karinameowww
2(a-b)^2-(a-2b)(a+2b) (извиняюсь за опечатку)
krugly1981
2(a^2-2ab+b^2) - a^2+4b^2=2a^2-4ab+2b^2-a^2+4b^2=a^2-4ab+6b^2
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Answers & Comments
= 5b^2 - 2ab