trả lời
chỗ 1/căn bậc 4 hay can bậc 2
chỗ đề off mik là căn 2
Giải pt
\(\frac{2+x}{\sqrt{20-x}}+\frac{2-x}{\sqrt{20+x}}=\frac{20}{3}\left(x\inℝ\right)\)
Giải pt
\(\frac{1}{7x+1}+\frac{1}{\sqrt{\left(7x+11\right)\left(9-7x\right)}}=\frac{7}{24}\left(x\inℝ\right)\)
Giải hệ pt:
1.\(\sqrt[4]{x}\left(\frac{1}{4}+\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=2\)
2.\(\sqrt[4]{y}\left(\frac{1}{4}-\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=1\)
Giải pt:
\(4\sqrt[3]{2x-1}-\sqrt{7x+2}=1\left(x\inℝ\right)\)
giải pt
\(\frac{2\left(x-\sqrt{2}\right)\left(x-\sqrt{3}\right)}{\left(1-\sqrt{2}\right)\left(1-\sqrt{3}\right)}+\frac{3\left(x-1\right)\left(x-\sqrt{3}\right)}{\left(\sqrt{2}-1\right)\left(\sqrt{2}-\sqrt{3}\right)}+\frac{4\left(x-1\right)\left(x-\sqrt{2}\right)}{\left(\sqrt{3}-1\right)\left(\sqrt{3}-2\right)}\)=3x-1
Giải hệ pt
\(\sqrt[4]{x}\left(\frac{1}{4}+\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)\)=2\(\sqrt[4]{y}\left(\frac{1}{4}-\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)\)=1Giải hệ pt
\(\sqrt[4]{x}\left(\frac{1}{4}+\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=2\)\(\sqrt[4]{y}\left(\frac{1}{4}-\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=1\)Giải hệ pt
\(\sqrt[4]{x}\left(\frac{1}{4}+\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=2\)
\(\sqrt[4]{y}\left(\frac{1}{4}-\frac{2\sqrt{x}+\sqrt{y}}{x+y}\right)=1\)
Áp dụng nội suy niu tơn để giải pt sau
\(\frac{2\left(x-\sqrt{2}\right)\left(x-\sqrt{3}\right)}{\left(1-\sqrt{2}\right)\left(1-\sqrt{3}\right)}+\frac{3\left(x-1\right)\left(x-\sqrt{3}\right)}{\left(\sqrt{2}-1\right)\left(\sqrt{2}-\sqrt{3}\right)}+\frac{4\left(x-1\right)\left(x-\sqrt{2}\right)}{\left(\sqrt{3}-1\right)\left(\sqrt{3}-\sqrt{2}\right)}=3x-1\)
