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gizellakerimov
@gizellakerimov
July 2022
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(y+2)*(y+2)=49 вставьте цифры вместо y
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nodzominanami
(y+2)*(y+2)=49
y^2+2y+2y+4=49
y^2+4y-45=0
Д=16+4*45=196
у=(-4+14)/2=5
y=(-4-14)/2=-9
ответ: y=5; y=-9
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Answers & Comments
y^2+2y+2y+4=49
y^2+4y-45=0
Д=16+4*45=196
у=(-4+14)/2=5
y=(-4-14)/2=-9
ответ: y=5; y=-9