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mashanewt1
@mashanewt1
July 2022
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Решите, пожалуйста, уравнение.
(5x-1)(5x+1)-(5x+2)=0
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ShirokovP
Verified answer
25x^2 - 1 - 5x - 2 = 0
25x^2 - 5x - 3 = 0
D = 25 + 4*3*25 = 325
√D = 5√13
x1 = (5 + 5√13)/50 = (1 + √13)/10;
x1 = (5 - 5√13)/50 = (1 - √13)/10;
2 votes
Thanks 1
sedinalana
Verified answer
25x²-1-5x-2=0
25x²-5x-3=0
D=25+300=325
x1=(5-5√13)/50=(1-√13)/10
x2=(1+√13)/10
2 votes
Thanks 1
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Answers & Comments
Verified answer
25x^2 - 1 - 5x - 2 = 025x^2 - 5x - 3 = 0
D = 25 + 4*3*25 = 325
√D = 5√13
x1 = (5 + 5√13)/50 = (1 + √13)/10;
x1 = (5 - 5√13)/50 = (1 - √13)/10;
Verified answer
25x²-1-5x-2=025x²-5x-3=0
D=25+300=325
x1=(5-5√13)/50=(1-√13)/10
x2=(1+√13)/10