\(\sqrt{28.9}\cdot\sqrt{40}\cdot\sqrt{11^2-5^2}\)
\(=\sqrt{289}\cdot\sqrt{4}\cdot4\sqrt{6}\)
\(=17\cdot2\cdot4\sqrt{6}\)
\(=136\sqrt{6}\)
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Các câu hỏi tương tự
a) \(\sqrt{28,9}.\sqrt{40}.\sqrt{11^2-5^2}\)
A=\(2\sqrt{40\sqrt{12}}-2\sqrt{\sqrt{75}}-3\sqrt{5\sqrt{48}}\)
E=\(\left(3\sqrt{11}-3\sqrt{2}-\sqrt{11}\right)\sqrt{11}+3\sqrt{22}\)
AI LÀM JUP VS 1 CÂU CX ĐC MK CÁM ƠN!!!
Tìm x biết:
\(\sqrt{3x^2-18x+28}+\sqrt{4x^2-24x+40}=10-x^2+6x\) \(\sqrt{4x^2+4x+5}+\sqrt{8x^2+8x+11}=4-4x^2-4x\)
a.\(\sqrt{19-6\sqrt{2}}\) b.\(\sqrt{11-6\sqrt{2}}\) c.\(\sqrt{9-6\sqrt{2}}\)
d.\(\sqrt{21+12\sqrt{3}}\) e.\(\sqrt{57-40\sqrt{2}}\)
\(\frac{\sqrt{11+\sqrt{5}}+\sqrt{11-\sqrt{5}}}{\sqrt{11+2\sqrt{29}}}-\sqrt{3-2\sqrt{2}}\)
TÍNH
sin211 + sin220 + sin230 + sin240 + sin250 + sin260 + sin270 + sin280 = ?
\(\sqrt{\left(\sqrt{7}-5\right)^2}+\sqrt{\left(2-\sqrt{7}\right)^2}\)
\(\sqrt{11+6\sqrt{2}}-\sqrt{11-6\sqrt{2}}\)
\(\sqrt{17+12\sqrt{2}}+\sqrt{17-12\sqrt{2}}\)
\(\sqrt{6+2\sqrt{5}}-\sqrt{6-2\sqrt{5}}\)
\(B=\sqrt{\left(5+3\sqrt{2}\right)^2}+\sqrt{\left(\sqrt{11}-3\sqrt{2}\right)^2}+\frac{11}{\sqrt{11}}\)
rút gọn
a)3 √5 + √20-2 √5
b)2 √2+ √8+ √50
c) 4√3+ √ 27 -√45 +2 √5
d) √ 75+ √ 48- √300
e)( √28- √12- √7) √7 +2 √21
f)( √99- √18- √11) √11+3 √22
g)3 √45-5 √125x +7 √20x+28(x>=0)