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Dina20037
@Dina20037
August 2022
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1 ) Упростите выражения:
а)(10b²-7b+2)-(6b²- 7b - 8)
б) 2у²(7у-8)
2)Вынесите за скобки общий множитель:
А)7ху-7хс
Б)18b² x-16bx²
3) решите уравнение :
17-5(х-2.2)=4-7х
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litanalove
1 а) раскрываем скобки
10b^2-7b+2-6b^2+7b+8=4b^2+10=2(2b^2+5)
b) 14y^3-16y^2
2. a) 7x(y-c), b) 2bx(9b-8x)
3. 17-5x+11-4+7x=0
2x+24=0, 2x= -24, x= -12
7 votes
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Answers & Comments
10b^2-7b+2-6b^2+7b+8=4b^2+10=2(2b^2+5)
b) 14y^3-16y^2
2. a) 7x(y-c), b) 2bx(9b-8x)
3. 17-5x+11-4+7x=0
2x+24=0, 2x= -24, x= -12