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lexaclaire
@lexaclaire
July 2022
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(2х-7)^2= (2х-1)^2 решите уравнение, (х-10)^2=(х+3)^2 найдите корень уравнения
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iriska124
Verified answer
1)4х ^2-28x+49=4x^2-4x+1
-28x+49=-4x+1
-28x+4x=1-49
-24x=-48
x=2
2)x^2-20x+100=x^2+6x+9
-20x+100=6x+9
-20x-6x=9-100
-26x=-91
x=3,5
6 votes
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Answers & Comments
Verified answer
1)4х ^2-28x+49=4x^2-4x+1-28x+49=-4x+1
-28x+4x=1-49
-24x=-48
x=2
2)x^2-20x+100=x^2+6x+9
-20x+100=6x+9
-20x-6x=9-100
-26x=-91
x=3,5