Решите уравнение (x-3)²=10x²-(3x-4)(3x+4)
andrejpyankoff
2
27.06.2019 16:50
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x ^2 - 6x + 9 = 10x^2 - 9x^2 + 16
x ^2 - x^2 - 6x = -9 +16
-6x = 7
x = - 1 1/6