tìm x:
\(\sqrt{x^2+x+1}=1\)
\(\sqrt{x^2+1}=-3\)
\(\sqrt{x^2-10x+25}=7-2x\)
\(\sqrt{2x+5}=5\)
\(\sqrt{x^2-4x+4}-2x+5=0\)
\(x^4-2x^2.\sqrt{x^2-2x+16}+2.\left(x^2-3x+10\right)=0\)
Giải phương trình :
1. \(x^2-3x-10+3\sqrt{x\left(x-3\right)}=0\)
2. \(\sqrt{\left(\sqrt{x-1}+1\right)^2}+\sqrt{\left(2-\sqrt{x-1}\right)^2}=5\)
Giải phương trình
a, \(\sqrt{x^2-x+9}=2x+1\)
b. \(\sqrt{5x+7}-\sqrt{x+3}=\sqrt{3x+1}\)
c. \(x^2-3x-10+3\sqrt{x.\left(x-3\right)}=0\)
d. \(\sqrt{2-x}+\sqrt{4-x}=x^2-6x+11\)
e. \(x+6\sqrt{x+8}+4\sqrt{6-2x}=27\)
Tìm x biết
a. x - \(\sqrt{x}\) - 6 = 0
b. 2x - 5\(\sqrt{x}\) + 3 = 0
c. x - 5\(\sqrt{x}\) +4 = 0
d. 3x - 10\(\sqrt{x}\) + 3 = 0
1, \(\sqrt{2x^2-3}=\sqrt{4x-3}\)
2, \(\sqrt{2x-1}=\sqrt{x-1}\)
3, \(\sqrt{x^2-x-6}=\sqrt{x-3}\)
4, \(\sqrt{x^2-x}=\sqrt{3x-5}\)
5, \(\sqrt{x^2+x}=x\)
6, \(\sqrt{1-x^2}x-1\)
7, \(\sqrt{x^2-4x+3}=x-2\)
8, \(\sqrt{x^2-1}-x^2+1=0\)
9, \(\sqrt{x^2-4}-x+2=0\)
10, \(\sqrt{1-2x^2}=x-1\)
Ai biết lm chỉ e vs ạ. e cảm ơn nhìu ạ.
Giải các phương trình sau:
\(2\sqrt{\left(x-2\right)\left(7-x\right)}-\sqrt{x-2}-\sqrt{7-x}=3\)
\(\dfrac{3x}{\sqrt{3x+10}}+1=\sqrt{3x+1}\)
\(\sqrt{7-x}+\sqrt{x-5}=x^2-12x+38\)
Giải pt
\(x^2-2-2\sqrt{1+6x}=2\)
\(\sqrt{25-x^2}-\sqrt{10-x^2}=3\)
\(x^3+2\sqrt{\left(3x-2\right)^3}=3x\left(3x-2\right)\)
Thank u <3 <3
Mấy bạn giúp mình bài này nha!
1) Tính A=(\(\sqrt{6}+\sqrt{2}\))*(\(\sqrt{3}-2\))*\(\sqrt{2+\sqrt{3}}\)
2) Cho x=4+\(\sqrt{10}\)
Tính A=\(\sqrt{3x+\sqrt{6x-1}}+\sqrt{3x-\sqrt{6x-1}}\)
3) Cho \(\sqrt{x}+\sqrt{y}-\sqrt{z}=0\)
CMR: \(\dfrac{1}{x+y-z}+\dfrac{1}{y+z-x}+\dfrac{1}{z+x-y}=0\)
4) Cho (\(\sqrt{x^2+5}+x\))*(\(\sqrt{y^2+5}+y\))=4
CMR: x+y=0