Các câu hỏi tương tự
a, \(\sqrt{24\cdot x^2\cdot y^2}\left(x\ge0\right)\)
a)3sqrt{40sqrt{12}}+4sqrt{sqrt{75}}-5sqrt{5sqrt{48}}b)sqrt{8sqrt{3}}+3sqrt{20sqrt{3}}-2sqrt{45sqrt{3}}c)left(sqrt{x}-1right).left(x+sqrt{x}+1right)left(xge0;yge0right)d)left(sqrt{x}+1right)left(x+1-sqrt{x}right)left(xge0;yge0right)e)left(sqrt{x}+yright)left(x+y^2-ysqrt{2}right)left(xge0;yge0right)
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a)\(3\sqrt{40\sqrt{12}}+4\sqrt{\sqrt{75}}-5\)\(\sqrt{5\sqrt{48}}\)
b)\(\sqrt{8\sqrt{3}}+3\sqrt{20\sqrt{3}}-2\sqrt{45\sqrt{3}}\)
c)\(\left(\sqrt{x}-1\right).\left(x+\sqrt{x}+1\right)\left(x\ge0;y\ge0\right)\)
d)\(\left(\sqrt{x}+1\right)\left(x+1-\sqrt{x}\right)\left(x\ge0;y\ge0\right)\)
e)\(\left(\sqrt{x}+y\right)\left(x+y^2-y\sqrt{2}\right)\left(x\ge0;y\ge0\right)\)
Rút gọna)3sqrt{40sqrt{12}}+4sqrt{sqrt{75}}-5sqrt{5sqrt{48}}b)sqrt{8sqrt{3}}+3sqrt{20sqrt{3}}-2sqrt{45sqrt{3}}c)left(sqrt{x}-1right).left(x+sqrt{x}+1right)left(xge0;yge0right)d)left(sqrt{x}+1right)left(x+1-sqrt{x}right)left(xge0;yge0right)e)left(sqrt{x}+yright).left(x+y^2-ysqrt{2}right)left(xge0;yge0right)
Đọc tiếp
Rút gọn
a)\(3\sqrt{40\sqrt{12}}+4\sqrt{\sqrt{75}}-5\)\(\sqrt{5\sqrt{48}}\)
b)\(\sqrt{8\sqrt{3}}+3\sqrt{20\sqrt{3}}-2\sqrt{45\sqrt{3}}\)
c)\(\left(\sqrt{x}-1\right).\left(x+\sqrt{x}+1\right)\left(x\ge0;y\ge0\right)\)
d)\(\left(\sqrt{x}+1\right)\left(x+1-\sqrt{x}\right)\left(x\ge0;y\ge0\right)\)
e)\(\left(\sqrt{x}+y\right).\left(x+y^2-y\sqrt{2}\right)\left(x\ge0;y\ge0\right)\)
Rút gọn:a)2sqrt{3x}-4sqrt{3x}+27-2sqrt{3x}(xge0)b)3sqrt{2x}-5sqrt{8x}+7sqrt{8x}+28left(xge0right)c)frac{2}{x^2-y^2}sqrt{frac{3left(x+yright)^2}{2}}left(xge0,yge0,xne yright)d)frac{2}{2a-1}sqrt{5a^2left(1-4a+4a^2right)}
Đọc tiếp
Rút gọn:
a)\(2\sqrt{3x}-4\sqrt{3x}\)+\(27-2\sqrt{3x}\)(\(x\ge0\))
b)\(3\sqrt{2x}-5\sqrt{8x}\)+\(7\sqrt{8x}+28\)\(\left(x\ge0\right)\)
c)\(\frac{2}{x^2-y^2}\sqrt{\frac{3\left(x+y\right)^2}{2}}\)\(\left(x\ge0,y\ge0,x\ne y\right)\)
d)\(\frac{2}{2a-1}\sqrt{5a^2\left(1-4a+4a^2\right)}\)
Rút gọna)sqrt{75}+sqrt{75}-sqrt{192}b)3sqrt{2x}-5sqrt{2x}-5sqrt{2x}+9-6sqrt{2x}left(x0right)c)3sqrt{2x}-4sqrt{8x}-5sqrt{50x}left(x0right)d)frac{1}{x^2-y^2}.sqrt{frac{2left(x+yright)^2}{3}}left(xge0;yge0;xne yright)e)left(3sqrt{2}+sqrt{3}right).sqrt{2}sqrt{54}f)2sqrt{21}-left(sqrt{28}+sqrt{12}-sqrt{7}right).sqrt{7}
Đọc tiếp
Rút gọn
a)\(\sqrt{75}+\sqrt{75}-\)\(\sqrt{192}\)
b)3\(\sqrt{2x}-5\sqrt{2x}-5\sqrt{2x}+9-6\sqrt{2x}\left(x>0\right)\)
c)3\(\sqrt{2x}-4\sqrt{8x}-5\sqrt{50x}\left(x>0\right)\)
d)\(\frac{1}{x^2-y^2}.\sqrt{\frac{2\left(x+y\right)^2}{3}}\left(x\ge0;y\ge0;x\ne y\right)\)
e)\(\left(3\sqrt{2}+\sqrt{3}\right).\sqrt{2}\sqrt{54}\)
f)\(2\sqrt{21}-\left(\sqrt{28}+\sqrt{12}-\sqrt{7}\right).\sqrt{7}\)
giải hệ phương trình :
a) \(\hept{\begin{cases}x\cdot\left(1+y-x\right)=-2\cdot y^2-y\\x\cdot\left(\sqrt{2\cdot y}-2\right)=y\cdot\left(\sqrt{x-1}-2\right)\end{cases}}\)
b) \(\hept{\begin{cases}1+x\cdot y+\sqrt{x\cdot y}=x\\\frac{1}{x\cdot\sqrt{x}}+y\cdot\sqrt{y}=\frac{1}{\sqrt{x}}+3\cdot\sqrt{y}\end{cases}}\)
Làm hộ mk nhé mk tick cho :))))))))))
Cho biểu thức\(P=\left(\frac{2x+1}{x\sqrt{x}-1}-\frac{\sqrt{x}}{x+\sqrt{x}+1}\right)\cdot\left(\frac{x\sqrt{x}-1}{\sqrt{x}+1}-\sqrt{x}\right)\)với \(x\ge0;x\ne1\)
a) Rút gọn P
b) Tìm x để \(P\cdot\sqrt{1-x}< 0\)
Rút gọna) sqrt{75}+sqrt{48}-sqrt{192}b)3sqrt{2x}-5sqrt{2x}-5sqrt{2x}9-6sqrt{2x}left(x0right)c)3sqrt{2x}-4sqrt{8x}-5sqrt{50x}left(x0right)d)frac{1}{x^2-y^2}.sqrt{frac{2left(x+yright)^2}{3}}left(xge0;yge0;xne yright)e)left(3sqrt{2}+sqrt{3}right).sqrt{2}-sqrt{54}f)2sqrt{21}-left(sqrt{28}+sqrt{12}-sqrt{7}right).sqrt{7}
Đọc tiếp
Rút gọn
a) \(\sqrt{75}+\sqrt{48}-\)\(\sqrt{192}\)
b)\(3\sqrt{2x}-5\sqrt{2x}-5\sqrt{2x}=9-6\sqrt{2x}\left(x>0\right)\)
c)\(3\sqrt{2x}-4\sqrt{8x}-5\sqrt{50x}\left(x>0\right)\)
d)\(\frac{1}{x^2-y^2}.\sqrt{\frac{2\left(x+y\right)^2}{3}}\left(x\ge0;y\ge0;x\ne y\right)\)
e)\(\left(3\sqrt{2}+\sqrt{3}\right).\sqrt{2}-\sqrt{54}\)
f)\(2\sqrt{21}-\left(\sqrt{28}+\sqrt{12}-\sqrt{7}\right).\sqrt{7}\)
\(\sqrt{2}.\sqrt{18x}-\sqrt{25x}+\sqrt{24}-\dfrac{1}{\sqrt{2}}\sqrt{8x}\) với \(x\ge0\)