х²+2х+1-64=0
х²+2х-63=0
Д1=1+63=64
х1=-1+8=7
х2=-1-8=-9
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х²+2х+1-64=0
х²+2х-63=0
Д1=1+63=64
х1=-1+8=7
х2=-1-8=-9
x^2+2x-63=0
x1+x2=-2
x1×x2=-63
x1=-9
x2=7