Giải pt
a, sqrt{x^2-4x+4} sqrt{4x^2-12x+9}
b, sqrt{x^2-5x+6}sqrt{x-2}
c, sqrt{x^2-2x+4}2x-2
d, sqrt{x+2sqrt{x-1}}2
e, sqrt{2x^2-2x+1}2x-1
f, sqrt{x+4sqrt{x-4}}2
g, sqrt{x^2-6x+9}4-x
h, sqrt{x^2-2x}sqrt{2-3x}
i, sqrt{-x^2+x+4}x-3
j, sqrt{x-3}-2sqrt{x^2-9}0
Đọc tiếp
Giải pt
a, \(\sqrt{x^2-4x+4}\)= \(\sqrt{4x^2-12x+9}\)
b, \(\sqrt{x^2-5x+6}=\sqrt{x-2}\)
c, \(\sqrt{x^2-2x+4}=2x-2\)
d, \(\sqrt{x+2\sqrt{x-1}}=2\)
e, \(\sqrt{2x^2-2x+1}=2x-1\)
f, \(\sqrt{x+4\sqrt{x-4}}=2\)
g, \(\sqrt{x^2-6x+9}=4-x\)
h, \(\sqrt{x^2-2x}=\sqrt{2-3x}\)
i, \(\sqrt{-x^2+x+4}=x-3\)
j, \(\sqrt{x-3}-2\sqrt{x^2-9}=0\)