1/2(x-1)(x+3)=x(x+3)/5+8

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1/2(x-1)(x+3)=x(x+3)/5+81/2(x-1)(x+3)=x(x+3)/5+81/2(x-1)(x+3)=x(x+3)/5+83x²+4x-95=0(x-5)(3x+19)

1/2(x-1)(x+3)=x(x+3)/5+8
1/2(x-1)(x+3)=x(x+3)/5+8

1/2(x-1)(x+3)=x(x+3)/5+8
3x²+4x-95=0
(x-5)(3x+19)=0
x=5或x=-19/3