Автор - deniskuzmin1995

x^2-2x-63=0 help plizzz

Ответ

Проверено экспертом

Автор - Mus1cSig
x²-2x-63=0
D= 2²-4×1×(-63)=4+252=256
x1=(2+16)/2=9
x2=(2-16)/2=-7

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