[Toán 7] Lũy thừa

M

minhmai2002

[TEX]x.(6 - x)^{2015}= (6 - x)^{2015} [/TEX]

[TEX]\Rightarrow x.(6 - x)^{2015} - (6 - x)^{2015} = 0[/TEX]

[TEX]\Rightarrow (6 - x)^{2015}.(x - 1) = 0[/TEX]

[TEX]\Rightarrow (6 - x)^{2015} = 0[/TEX] hoặc [TEX] x - 1 = 0[/TEX]

[TEX]\Rightarrow x = 6[/TEX] hoặc x = 1
 
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