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King1111
@King1111
June 2022
2
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Раскройте скобки:
а)-2*(X-4)
б)a*(-3b+2c-7)
в)-1,5*(2x-4y)
г)3*(-4x+6)-(1-12x)
д)2*(7-y)+7*(x-2)
Заранее большое спасибо.
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eroshsofiya
А) -2х+8
Б) -3аb+2ac-7a
B)-3x+6y
1 votes
Thanks 2
aru2000aru
A)-2(x-4)=-2x+8
B) a(-3b+2c-7)=-3ab+2ac-7a
B)-1,5(2x-4y) =-3x+6y
G)3(-4x+6)-(1-12x)=-12x+18-1+12x=17
D) 2(7-y)+7(x-2)=14-2y+7x-14=5x
2 votes
Thanks 2
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Answers & Comments
Б) -3аb+2ac-7a
B)-3x+6y
B) a(-3b+2c-7)=-3ab+2ac-7a
B)-1,5(2x-4y) =-3x+6y
G)3(-4x+6)-(1-12x)=-12x+18-1+12x=17
D) 2(7-y)+7(x-2)=14-2y+7x-14=5x