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JulliaHelp
@JulliaHelp
July 2022
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Report
Упростите выражение:
1)4 d ( − 7 d − 1 ) − 8 d ( − 2 d − 5 )
2)(x+9y)(x−7)−(−6x+6y)(−5x−1)
Вынесите за скобки общий множитель:
30by+110b+10y
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Answers & Comments
akiseleva175
Очень советую приложение Photomath для решения таких задач
0 votes
Thanks 0
Trofimkirillov
N°1
1)4d(-7d-1)-8d(-2d-5)
-28d²-4d+16d²+40d
-12d²+36d
2)(x+9y)(x-7)-(-6x+6y)(-5x-1)
x²-7x+9xy-63y-30x²+6x-30xy-6y
-29x²-x-21xy-69y
-29x²-21xy-69y-x
N°2
30by+110b+10y
10(3by+11b+y)
2 votes
Thanks 0
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Answers & Comments
1)4d(-7d-1)-8d(-2d-5)
-28d²-4d+16d²+40d
-12d²+36d
2)(x+9y)(x-7)-(-6x+6y)(-5x-1)
x²-7x+9xy-63y-30x²+6x-30xy-6y
-29x²-x-21xy-69y
-29x²-21xy-69y-x
N°2
30by+110b+10y
10(3by+11b+y)