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VovanychMiner
@VovanychMiner
May 2021
2
25
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Помогите с 3 номером пж!
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kosiev
(3х-2)(2-4х)=6х-4-12х²+8х=-12х²+14х-4
(7у+2х)(3-4у)=21у+6х-28у²-8ху
х²(5х-2)(7-х)=х²(35х-14-5х²+2х)=35х³-14х²-5х^4+2x³=-5x^4+37x³-14x²
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parus77
Verified answer
А)=6х-12х^2-4+8x=14x-12x^2-4
б)=21y-28y^2+6x-8xy
в)=35x^3-5x^4-14x^2+2x^3=37x^3-5x^4-14x^2
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Answers & Comments
(7у+2х)(3-4у)=21у+6х-28у²-8ху
х²(5х-2)(7-х)=х²(35х-14-5х²+2х)=35х³-14х²-5х^4+2x³=-5x^4+37x³-14x²
Verified answer
А)=6х-12х^2-4+8x=14x-12x^2-4б)=21y-28y^2+6x-8xy
в)=35x^3-5x^4-14x^2+2x^3=37x^3-5x^4-14x^2