2(x-5)²=x(-2x+7)
-2x²+10x-50=-2x²+7x
les 2 -2x² s'annulent ce qui donne
10x-7x=50
3x=50
x=50sur3
3(x+2)²=2x(x-6)+8
3(x²+4x+4)=2x²-12x+8
3x²+12x+12=2x²-12x+8
x²+24x+4=0
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2(x-5)²=x(-2x+7)
-2x²+10x-50=-2x²+7x
les 2 -2x² s'annulent ce qui donne
10x-7x=50
3x=50
x=50sur3
3(x+2)²=2x(x-6)+8
3(x²+4x+4)=2x²-12x+8
3x²+12x+12=2x²-12x+8
x²+24x+4=0