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band69
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July 2022
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Решите уравнение 9+x²=x(x+2)
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VikaMiller22
9+x²=x(x+2)
9+x²=
x²+2x
9+x²-
x²-2x
9-2x
-2x=-9
x= -9 : (-2)
x= 4,5
2 votes
Thanks 0
rubilovalex
9+x^2=x^2+2x, 9+x^2-x^2-2x=0, 9-2x=0, -2x=-9, x=(-9)/(-2), x=4,5. Ответ:x=4,5.
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Answers & Comments
9+x²=x²+2x
9+x²-x²-2x
9-2x
-2x=-9
x= -9 : (-2)
x= 4,5