已知|X-8Y|+2(Y-1)^2+3|8Z-3X|=0 求x+y+z

问题描述:

已知|X-8Y|+2(Y-1)^2+3|8Z-3X|=0 求x+y+z

|X-8Y| + 2(Y-1)^2 + 3|8Z-3X| = 0
|X-8Y| = 0
2(Y-1)^2 = 0
3|8Z-3X| = 0
X = 8Y
Y = 1
Z = 3X/8
X = 8
Y = 1
Z = 3
X+Y+Z = 12