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phuocbig


Giải phương trình sau:
[tex]a) 2\sqrt{\frac{3x+2}{x+1}} = \frac{x+1}{3x+2} + 1 [/tex]
[tex] b) \sqrt{1-x^2} + \sqrt{1-x} + \sqrt{1+x}=3 [/tex]
[tex]a) 2\sqrt{\frac{3x+2}{x+1}} = \frac{x+1}{3x+2} + 1 [/tex]
[tex] b) \sqrt{1-x^2} + \sqrt{1-x} + \sqrt{1+x}=3 [/tex]