x(2x-7)=49/8
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x(2x-7)=49/8
8x(2x-7)=49
16x^2-56x-49=0
x=(56+√56^2+4*16*49)/2*16=(7+7√2)/4
或x=(56-√56^2+4*16*49)/2*16=(7-7√2)/芹咐4
(2x-1)²=(3x+1)²
(2x-1)²-(3x+1)²=0
(2x-1+3x+1)(2x-1-3x-1)=0
5x(x+2)=0
x=0 或x=-2
(x+1)(x-1)=2√2x
x^2-2√2x-1=0
x^2-2√2x+2-2-1=0
(x-√2)^2=3
x=√2+√3或橡岩x=√梁首御2-√3
8x(2x-7)=49
16x^2-56x-49=0
x=(56+√56^2+4*16*49)/2*16=(7+7√2)/4
或x=(56-√56^2+4*16*49)/2*16=(7-7√2)/芹咐4
(2x-1)²=(3x+1)²
(2x-1)²-(3x+1)²=0
(2x-1+3x+1)(2x-1-3x-1)=0
5x(x+2)=0
x=0 或x=-2
(x+1)(x-1)=2√2x
x^2-2√2x-1=0
x^2-2√2x+2-2-1=0
(x-√2)^2=3
x=√2+√3或橡岩x=√梁首御2-√3
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