giải phương trình

a)\(\sqrt{2x}-\sqrt{98}=0\)

b)\(\sqrt{2x}=\sqrt{8}\)

c)\(\sqrt{5x^2}=\sqrt{20}\)

d)\(\sqrt{2x}-3\sqrt{8x}+4\sqrt{32x}=52\)

e)\(3\sqrt{x-1}+2\sqrt{4x-4}-3\sqrt{9x-9}=-6\)

f)\(\sqrt{x-1}+\sqrt{4x-4}-\sqrt{25x-25}+2=0\)

g)\(\sqrt{9x^2+18}+2\sqrt{x^2+2}-\sqrt{25x^2+50+3}=0\)

h)\(\sqrt{x-1}=\sqrt{3}\)

k)\(\sqrt{9x^2-6x+1}=3\)

l)\(\sqrt{2x-1}=2\)

m)\(\sqrt{x+2}=\sqrt{3-x}\)

n)\(\sqrt{4x^2}-4x+1=\sqrt{7-4\sqrt{3}}+\sqrt{7+4\sqrt{3}}\)

tính

a)\(\frac{\sqrt{10}+\sqrt{6}}{2\sqrt{5}+\sqrt{12}}\)

b)\(\sqrt{\frac{16}{81}}\)

c)\(\sqrt{2\frac{7}{9}}\)

d)\(\frac{\sqrt{2}}{\sqrt{288}}\)

f)\(\sqrt{1\frac{7}{9}.0,04}\)

g)\(\sqrt{0,09.1,21-0,09.0,4}\)

h)\(\left(3\sqrt{18}-2\sqrt{98}+\sqrt{72}\right):\sqrt{2}\)

i)\(\left(\sqrt{27}-6\sqrt{243}\right):3\sqrt{3}\)

tìm x bs

a)\(\sqrt{2x+1}=\sqrt{x}\)

b)\(\sqrt{3-x}=\sqrt{x-2}\)

tính

a) \(\sqrt{25.16}\)

b)\(\sqrt{12,1.250}\)

c)\(\sqrt{0,4}.\sqrt{8,1}.\sqrt{1600}\)

d)\(\sqrt{2,7}.\sqrt{3}.\sqrt{360}\)

e)\(\sqrt{20,8^2-19,2^2}\)

f)\(\sqrt{13^2-12^2}\)

g)\(\sqrt{2+\sqrt{3}}.\sqrt{2-\sqrt{3}}\)

h)\(\sqrt{3+\sqrt{5}}.\sqrt{3-\sqrt{5}}\)

i) \(2\sqrt{3}.\left(\sqrt{3-1}\right)+\left(1+\sqrt{3}\right)^2-2\sqrt{6}\)

k) \(\sqrt{2-\sqrt{2}}.\sqrt{2+\sqrt{2}}\sqrt{8}\)

l) \(\left(\sqrt{3-\sqrt{5}}.\sqrt{3+\sqrt{5}}\right)^2\)

tìm x biết

a)\(\sqrt{x^2}=5\)

b)\(\sqrt{\left(x-1\right)^2}=2\)

c)\(\sqrt{2}=2x-1\)

d)\(\sqrt{x^2-x+4}=x+2\)

a) \(\sqrt{3^2}-\sqrt{\left(7\right)^2}+\sqrt{\left(-1\right)^2}\)

b)\(-2\sqrt{\left(-2\right)^2}+\sqrt{\left(-5\right)^2}+\sqrt{3^2}\)

c)\(\sqrt{\left(2-\sqrt{2}\right)^2}+\sqrt{\left(2+\sqrt{2}\right)^2}\)

d)\(\sqrt{\left(3\sqrt{2}\right)^2}-\sqrt{\left(1-\sqrt{2}\right)^2}\)

e)\(\sqrt{3-2\sqrt{2}}+\sqrt{3+2\sqrt{2}}\)

f)\(\sqrt{9-4\sqrt{5}}+\sqrt{9+4\sqrt{5}}\)

g)\(\sqrt{9-4\sqrt{2}}+\sqrt{11-6\sqrt{2}}\)

h)\(\sqrt{12+8\sqrt{2}}+\sqrt{6-4\sqrt{2}}\)

k)\(\left(2-\sqrt{3}\right)\sqrt{7+4\sqrt{3}}\)

tìm x biết :

a)\(\sqrt{2x+1}=\sqrt{x}\)

b)\(\sqrt{3-x}=\sqrt{x-2}\)