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DINKAtv
@DINKAtv
March 2022
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помогите ,решите 308, и если можно то картинкой.
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Answers & Comments
rubiliam2003
1)m³-n³+2n-2m=(m-n)(m²+mn+n²)+2(m-n)=(m-n)(m²+mn+n²+2)
2)3a³-3b³+5a²-5b²=3(a-b)(a²+ab+b²)+5(a-b)(a+b)=(a-b)(3a²+3ab+3b²+5a+5b)
3)
+
+x²+y²=(x²+y²)(
-x²y²+
)+(x^2+y^2)=(x²+y²)(
+x²y²+
+1)
4)a³-b³+a²-b²=(a-b)(a²+ab+b²)+(a+b)(a-b)=(a-b)(a²+ab+b²+a+b)
5)
+xy³-x³y-
=(x²+y²)(x+y)(x-y)-xy(x+y)(x-y)=(x+y)
(x-y)(x²-xy+y²)
6)
-a³b+ab³-
=a³(a-b)+b³(a-b)=(a-b)(a+b)(a²-ab+b²)
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Answers & Comments
2)3a³-3b³+5a²-5b²=3(a-b)(a²+ab+b²)+5(a-b)(a+b)=(a-b)(3a²+3ab+3b²+5a+5b)
3)++x²+y²=(x²+y²)(-x²y²+)+(x^2+y^2)=(x²+y²)(+x²y²++1)
4)a³-b³+a²-b²=(a-b)(a²+ab+b²)+(a+b)(a-b)=(a-b)(a²+ab+b²+a+b)
5)+xy³-x³y-=(x²+y²)(x+y)(x-y)-xy(x+y)(x-y)=(x+y)
(x-y)(x²-xy+y²)
6)-a³b+ab³-=a³(a-b)+b³(a-b)=(a-b)(a+b)(a²-ab+b²)