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cuocsong20
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giải phương trình
[TEX]\sqrt{4-x^2} + sqrt{1+4x} +sqrt{x^2+ y^2- 2y-3}=sqrt{x^4-16} -y+5[/TEX]
giup minh nha.
[TEX]\sqrt{4-x^2} + sqrt{1+4x} +sqrt{x^2+ y^2- 2y-3}=sqrt{x^4-16} -y+5[/TEX]
giup minh nha.
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