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biswombiswom
@biswombiswom
August 2022
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Помогите ришить уравнение (2x-3) (x+7)=(x+4) (2x-3)+3
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Regent1828
Verified answer
(2x-3)*(x+7) = (x+4)*(2x-3)+3
2x²-3x+14x-21 = 2x²+8x-3x-12+3
6x = 12
x = 12:6
x = 2
(2*2-3)*(2+7) = (2+4)*(2*2-3)+3
9 = 9
Ответ: {2}
1 votes
Thanks 2
girls16
Раскрываем скобки:
2х2+14х-3х-21=2х2-3х+8x-12+3
2x2+11x-21-2x2+5x-9=0
6x-12=0
6x=12
x=2
3 votes
Thanks 2
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Answers & Comments
Verified answer
(2x-3)*(x+7) = (x+4)*(2x-3)+32x²-3x+14x-21 = 2x²+8x-3x-12+3
6x = 12
x = 12:6
x = 2
(2*2-3)*(2+7) = (2+4)*(2*2-3)+3
9 = 9
Ответ: {2}
2х2+14х-3х-21=2х2-3х+8x-12+3
2x2+11x-21-2x2+5x-9=0
6x-12=0
6x=12
x=2