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emilka6204
@emilka6204
July 2022
2
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ПОМОГИИИИтеее Срочнооо нужнноооо
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Trofimkirillov
1.
а)(a-3b)+(5a-3b)-2a
a-3b+5a-3b-2a
4a-6b
б)4x(x+5)-5x(2x+3)
4x²+20x-10x²-15x
-6x²+5x
в)(x-2)(x²+3)-x³
x³+3x-2x²-6-x³
3x-2x²-6
-2x²+3x-6
г)(-2x²+3x)+(4x²-3)-4(2x-4)
-2x²+3x+4x²-3-8x+16
2x²-5x+13
д)4xy(2x+0,5y-xy)
8x²y+2xy²-4x²y²
-4x²y²+8x²y+2xy²
е)(x-3)(x+2)
x²+2x-3x-6
x²-x-6
2.
7(3y-2)-4(5y-4)
y=-5
21y-14-20y+16
y+2
-5+2
-3
Ответ:-3
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ЯгодкаЯлесная
Фоточка тебе в помощь ;)
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Answers & Comments
а)(a-3b)+(5a-3b)-2a
a-3b+5a-3b-2a
4a-6b
б)4x(x+5)-5x(2x+3)
4x²+20x-10x²-15x
-6x²+5x
в)(x-2)(x²+3)-x³
x³+3x-2x²-6-x³
3x-2x²-6
-2x²+3x-6
г)(-2x²+3x)+(4x²-3)-4(2x-4)
-2x²+3x+4x²-3-8x+16
2x²-5x+13
д)4xy(2x+0,5y-xy)
8x²y+2xy²-4x²y²
-4x²y²+8x²y+2xy²
е)(x-3)(x+2)
x²+2x-3x-6
x²-x-6
2.
7(3y-2)-4(5y-4)
y=-5
21y-14-20y+16
y+2
-5+2
-3
Ответ:-3