Question

решить уравнение x^2-(x-7)(x+7)=8x

Answer 1

x²-(x-7)(x+7)=8x
x²-(x²-49)=8x
x²-x²+49=8x
8x=49
x=49/8
x=6,125
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Answer 2

х^2-х^2+49=8х
8х=49
х=6,125