(25-x)(150-2x)=4800

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(25-x)(150-2x)=4800(25-x)(150-2x)=4800(25-x)(150-2x)=4800(25-x)(150-2x)=4800两边除以2x²-100x+1875=2

(25-x)(150-2x)=4800
(25-x)(150-2x)=4800

(25-x)(150-2x)=4800
(25-x)(150-2x)=4800
两边除以2
x²-100x+1875=2400
x²-100x=575
x²-100x+2500=575+2500
(x-50)²=3075
x-50=±5√23
x=50±5√23

(25-x)(150-2x)=4800
(25-x)(50+25-x)=2400
(25-x)^2+50(25-x)-2400=0
(25-x-30)(25-x+80)=0
(-5-x)(105-x)=0
x1=-5 x2=105

乘开额...

原方程可化为2(75-X)(25-X)=4800
∴(75-X)(25-X)=2400
∴1875-100X+X^X=2400
∴X^X-100x-525=0
∴X=(100±10倍根号79)÷2
=50±5倍根号79

(25-X)(150-2X)=4800
3750-50x-150x+2x²=4800
2x²-200x-1050=0
x²-100x-525=0
(x+5)(x-105)=0
x=-5 或 x=105