Toán Lớp 6: Tìm x :
2(x – 3 ) – ( x – 3 )^2 = 0
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Toán Lớp 6: Tìm x :
2(x – 3 ) – ( x – 3 )^2 = 0
Comments ( 2 )
=>2.(x-3)-(x-3).(x-3)=0
=>(x-3).(2-x+3)=0
=>(x-3).(5-x)=0
=>[(x-3=0),(5-x=0):}
=>[(x=0+3),(x=5-0):}
=>[(x=3),(x=5):}
Vậy x\in{3;5}