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WeeQ
@WeeQ
July 2022
2
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49y²-0,09=0
25x²-30x+9=0
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alex6712
49y^2-0.09=0
49y^2 - 9/100 =0
49y^2=9/100
у^2= (+-3/70)
у1=3/70
у2=-3/70
25х^2-30х+9=0
(5х-3)^2=0
25x^2-30x+9=0
(5x-3)^2=0
5x-3=0
x=5/3=0.6
2 votes
Thanks 1
Kixcertborn2
не верно
alex6712
спасибо, я нашёл ошибку, D/4=-b/2a, а я делил на 1а, в этом моя ошибка
Kixcertborn2
я рад, что вы исправились)
Kixcertborn2
Verified answer
49у^2-0,09=0
49у^2=0,09
у^2=0,09/49
у=√(0,09/49)
у≈+-0,043
25х^2-30х+9=0
D/4=15^2-9*25=0
x=15/25=3/5=0,6
3 votes
Thanks 1
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Answers & Comments
49y^2 - 9/100 =0
49y^2=9/100
у^2= (+-3/70)
у1=3/70
у2=-3/70
25х^2-30х+9=0
(5х-3)^2=0
25x^2-30x+9=0
(5x-3)^2=0
5x-3=0
x=5/3=0.6
Verified answer
49у^2-0,09=049у^2=0,09
у^2=0,09/49
у=√(0,09/49)
у≈+-0,043
25х^2-30х+9=0
D/4=15^2-9*25=0
x=15/25=3/5=0,6