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nastenka040716
@nastenka040716
July 2022
2
21
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преобразуйте в многочлен
1) (х-3)(х + 3)-3х(4-х); 2)-4у(у + 2) + (у-5)^2; 3)2(а-3)2-2а^2.
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Владуше
А) (x^-9)-12x+3x^= x^-9-12+3x^
x^-21+3x^
0 votes
Thanks 0
Владуше
б) -8y+(-5)^*2= -2(4y-(-5)^)= -2(4y-25)
Владуше
в) 4(a-3)-4a^ = 4(a-3-a^) ^-квадрат
2407Alexa
1) х^2-9-12х+3х^2=2х^2-12х-9;
2) -4у^2-8у+у^2-10у+25=-3у^2-18у+25;
3) 2(а^2-6а+9)-2а^2=2а^2-12а+18-2а^2=18-12а=6(3-2а);
3 votes
Thanks 2
xDerOmmeNx
1 можно свернуть еще
xDerOmmeNx
(2x-3)^2
xDerOmmeNx
ой пардон не прав
xDerOmmeNx
а не, прав
Владуше
ахпхах, хорошо-хорошо
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Answers & Comments
x^-21+3x^
2) -4у^2-8у+у^2-10у+25=-3у^2-18у+25;
3) 2(а^2-6а+9)-2а^2=2а^2-12а+18-2а^2=18-12а=6(3-2а);