2x²-7x=3x-5
2x²-10x+5=0
2(x²-5x)+5=0
2(x²-5x+25/4)-25/2+5=0
2(x-5/2)²=15/2
(x-5/2)²=15/4
x-5/2=±√15/2
x=(5±√15)/2
x(x-6)-2(x+8)=0
x²-6x-2x-16=0
x²-8x=16
x²-8x+16=32
(x-4)²=32
x-4=±4√2
x=4±4√2
(2x+1)²=4x+2
4x²+4x+1=4x+2
4x²=1
x²=1/4
x=±1/2
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