`***`Lời giải`***`
`((2x-4)(2x+3))/8=((x-4)^2)/6+((x-2)^2)/3`
`<=>(3(2x-4)(2x+3))/24=(4(x-4)^2)/24+(8(x-2)^2)/24`
`<=>3(2x-4)(2x+3)=4(x-4)^2+8(x-2)^2`
`<=>(6x-12)(2x+3)=4(x^2-8x+16)+8(x^2-4x+4)`
`<=>6x(2x+3)-12(2x+3)=4(x^2-8x+16)+8(x^2-4x+4)`
`<=>12x^2+18x-24x-36=4x^2-32x+64+8x^2-32x+32`
`<=>12x^2-8x^2-4x^2+32x+18x+32x-24x=64+32+36`
`<=>58x=132`
`<=>x=66/29`
Vậy `S={66/29}`
