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wqewqew
@wqewqew
December 2021
1
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Выполните действия
(y²-2a)(2a+y²)
(3x²+x)²
(2+m)²(2-m)²
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Kixcertborn2
Verified answer
(y²-2a)(2a+y²)=2ay
²+y⁴-4a²-2ay²=y⁴-4a²
(3x²+x)²=(3x
²)²+2*3x²x+x²=9x⁴+6x³+x²
(2+m)²(2-m)²=(2+m)
²*2-(2+m)²*m=8+8m+2m²+(-4-4m-m²-m²)m=8+4m-2m²-m³
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Answers & Comments
Verified answer
(y²-2a)(2a+y²)=2ay²+y⁴-4a²-2ay²=y⁴-4a²(3x²+x)²=(3x²)²+2*3x²x+x²=9x⁴+6x³+x²
(2+m)²(2-m)²=(2+m)²*2-(2+m)²*m=8+8m+2m²+(-4-4m-m²-m²)m=8+4m-2m²-m³