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FrancescaZanotti
@FrancescaZanotti
July 2022
1
4
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1) (x-17)(x+17) = x^2+6x-49
2) (1,2x-4)(1,2x+4)-(1,3x-2)(1,3x+2)=0,5x(8-0,5x)
Спасибо заранее!!!!
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Answers & Comments
marie237456789
1)х²-289=х²+6х-49
-289=6х-49
-6х=-49+289
-6х=240
х=240/-6
х=-40
2)1,44х²-16-1,69х²+4=4х-0,25
-13-0,25=4х-0,25
-13=4х
х=-13/4
х=-3,25
3 votes
Thanks 5
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Report "1) (x-17)(x+17) = x^2+6x-49 2) (1,2x-4)(1,2x+4)-(1,3x-2)(1,3x+2)=0,5x(8-0,5x) Сп..."
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Answers & Comments
-289=6х-49
-6х=-49+289
-6х=240
х=240/-6
х=-40
2)1,44х²-16-1,69х²+4=4х-0,25
-13-0,25=4х-0,25
-13=4х
х=-13/4
х=-3,25