N
namlun_ani


Giải phương trình
a, [TEX]\sqrt{5x^{2} + 14x + 9} - \sqrt{x^{2} - x - 20} = 5sqrt{x+1}[/TEX]
b, [TEX]\sqrt[4]{3(x+5)} - \sqrt[4]{x+13} = \sqrt[4]{11-x} - \sqrt[4]{3(3-x)}[/TEX]
a, [TEX]\sqrt{5x^{2} + 14x + 9} - \sqrt{x^{2} - x - 20} = 5sqrt{x+1}[/TEX]
b, [TEX]\sqrt[4]{3(x+5)} - \sqrt[4]{x+13} = \sqrt[4]{11-x} - \sqrt[4]{3(3-x)}[/TEX]
Last edited by a moderator: