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zaichicha14
@zaichicha14
July 2022
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Найдите значение выражения , если xy=-3,x+y=6 1)x^3y^2+x^2y^3 2) (x-y)^2 3) x^4+y^4
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gkrasavin
X³y²+x²2y³=x²y²(x+2y)=81×9(9-6)=2187
9×9×9=729
x=9 y=-3
x=3 y=3
2) x²-2xy+y²=81+54+9=144
9-18+9=0
3) 9×9×9×9+(-3)(-3)(-3)(-3)=6561+81=6642
81+81=162
2 votes
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Answers & Comments
9×9×9=729
x=9 y=-3
x=3 y=3
2) x²-2xy+y²=81+54+9=144
9-18+9=0
3) 9×9×9×9+(-3)(-3)(-3)(-3)=6561+81=6642
81+81=162