问题
填空题
若|x-3|+|y+2|=0,则6xy2-
|
答案
∵|x-3|+|y+2|=0,
∴x-3=0,y+2=0,
x=3,y=-2,
∴6xy2-
xy2+5 3
xy22 3
=(6-
+5 3
)xy22 3
=5xy2,
当x=3,y=-2时,
原式=5xy2
=5×3×(-2)2
=15×4
=60,
故答案为:60.
若|x-3|+|y+2|=0,则6xy2-
|
∵|x-3|+|y+2|=0,
∴x-3=0,y+2=0,
x=3,y=-2,
∴6xy2-
xy2+5 3
xy22 3
=(6-
+5 3
)xy22 3
=5xy2,
当x=3,y=-2时,
原式=5xy2
=5×3×(-2)2
=15×4
=60,
故答案为:60.