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kolchanovaanna
@kolchanovaanna
July 2022
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подбери корни уравнения:
х*х плюс х=20
(х-1)*(х плюс 1)=63
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daryastognieva
1)
x*x+x=20
x^2+x=20
4^2+4=20
16+4=20
20=20
x=20
2)
(x-1)(x+1)=63
x^2-1=63
x^2=64
x=8
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Answers & Comments
x*x+x=20
x^2+x=20
4^2+4=20
16+4=20
20=20
x=20
2)
(x-1)(x+1)=63
x^2-1=63
x^2=64
x=8