(х-2)²=3х-8
х²-4х+4=3х-8
х²-4х-3х=-8-4
х²-7х=-12
х²-7х+12=0
D=(-7)²-4•1•12=49-48=1
√D=√1=1
X=(b±√D) :2a
X1=(-7+1):2•1=-6:2=-3
X2=(-7-1):2•1=-8:2=-4
(х-2)²=3х-8
х²-4х+4=3х-8
х²-4х-3х=-8-4
х²-7х=-12
х²-7х+12=0
D=(-7)²-4•1•12=49-48=1
√D=√1=1
X=(b±√D) :2a
X1=(-7+1):2•1=-6:2=-3
X2=(-7-1):2•1=-8:2=-4