Em nhập đủ đề nha em!
Em nhập đủ đề nha em!
Rút gọn: (2 - \(\sqrt{3}\) )\(\sqrt{26+15\sqrt{3}}\) - (2 + \(\sqrt{3}\) )\(\sqrt{26-15\sqrt{3}}\)
Tính GTBT:
a, \(A=^3\sqrt{20+14\sqrt{2}}+^3\sqrt{20-14\sqrt{2}}\)
\(b,B=^3\sqrt{26+15\sqrt{3}}-^3\sqrt{26-15\sqrt{3}}\)
x=\(\dfrac{7}{\sqrt[3]{26+15\sqrt{3}}}-\sqrt{26+15\sqrt{3}}\)
Tính Q=\(\dfrac{x^6+x^4+4x^2}{40\left(x^4+4x^2-144\right)}\)
\(\left(2-\sqrt{3}\right)\sqrt{26+15\sqrt{3}-\left(2+\sqrt{3}\right)\sqrt{26-15\sqrt{3}}}\)
\(B=\left(2-\sqrt{3}\right).\sqrt{26+15\sqrt{3}}-\left(2+\sqrt{3}\right).\sqrt{26-15\sqrt{3}}\)
\(C=\left(\sqrt{10}-\sqrt{2}\right).\sqrt{3+\sqrt{5}}\)
3√(26+15√3) + 3√(26-15√3) = ?
Thu gọn:
\(\left(2-\sqrt{3}\right)\sqrt{26+15\sqrt{3}}-\left(2+\sqrt{3}\right)\sqrt{26-15\sqrt{3}}\)
C/m
\(\left(2-\sqrt{3}\right).\sqrt{26+15\sqrt{3}}-\left(2+\sqrt{3}\right).\sqrt{26-15\sqrt{3}}=\sqrt{2}\)
Rút gọn
A=(\(\left(2-\sqrt{3}\right).\sqrt{26+15\sqrt{3}}-\left(2+\sqrt{3}\right).\sqrt{26-15\sqrt{3}}\)
Rút gọn: \(\sqrt[3]{15\sqrt{3}-26}-\sqrt[3]{15\sqrt{3}+26}\)
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