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km616
@km616
July 2022
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Упростите выражение и объясните, почему именно так, пожалуйста)
y(3y-2)²-9y(4+y)²
(x+4)²-(x-2)(x+2)
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vika140506
1) y(9y^2-12y+4)-9y(16+8y+y^2)=9y^3-12y^2+4y-144y-72y^2-9y^3=-156y^2-140y=-4y(39y-35)
2) x^2+8x+16-x2+4=8x+20
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km616
Спасибо)
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Answers & Comments
2) x^2+8x+16-x2+4=8x+20