Toán Lớp 7: Giúp em với ạ (x-2)^2+|y-10|=0
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Toán Lớp 7: Giúp em với ạ (x-2)^2+|y-10|=0
Comments ( 2 )
Ta có:
{((x-2)^2ge0forallx),(|y-10|ge0forally):}
=>(x-2)^2+|y-10|ge0forallx;y
Mà (x-2)^2+|y-10|=0
=>{((x-2)^2=0),(|y-10|=0):}
=>{(x-2=0),(y-10=0):}
=>{(x=0+2),(y=0+10):}
=>{(x=2),(y=10):}
Vậy x=2;y=10