(х-2)²-8(х-2)+15=0
х²-4х+4-8х+16+15=0
х²-12х+35=0
D=b²-4ac
D=144-140=4
х₁=(12+2)/2
х₁=7
х₂=(12-2)/2
х₂=5
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(х-2)²-8(х-2)+15=0
х²-4х+4-8х+16+15=0
х²-12х+35=0
D=b²-4ac
D=144-140=4
х₁=(12+2)/2
х₁=7
х₂=(12-2)/2
х₂=5