S
stork_pro


Giải phưong trình :
a)[TEX]\sqrt{\frac{1-x}{x}}=\frac{x^2+2x}{x^2+1}[/TEX]
b)[TEX]\sqrt{x-2}+\sqrt{4-x}=2x^2-5x-1[/TEX]
c)[TEX]\sqrt{1-x^2}=(\frac{2}{3}-\sqrt{x})^2[/TEX]
a)[TEX]\sqrt{\frac{1-x}{x}}=\frac{x^2+2x}{x^2+1}[/TEX]
b)[TEX]\sqrt{x-2}+\sqrt{4-x}=2x^2-5x-1[/TEX]
c)[TEX]\sqrt{1-x^2}=(\frac{2}{3}-\sqrt{x})^2[/TEX]
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