若根号下x^+8x+16+根号下x^-12x+36=10,化简|2x+8|+|2x-12|
根号下x^+8x+16+根号下x^-12x+36=10
=x+4+x-6=10
2x-2=10
x=6
|2x+8|+|2x-12|
=12+8+12-12
=20