câu a là (-5)^2 nha, mình viết thiếu ạ :>
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Bài 3: Liên hệ giữa phép nhân và phép khai phương
Các câu hỏi tương tự
Rút gọn:
A sqrt{2}left(sqrt{8}-sqrt{32}-2sqrt{18}right)
B left(sqrt{2}-sqrt{3-sqrt{5}}right)
C sqrt{4-sqrt{7}}-sqrt{4+sqrt{7}}
D sqrt{3}-sqrt{2}-sqrt{sqrt{3}+sqrt{2}}
E left(sqrt{2}-sqrt{3}+sqrt{5}right)sqrt{2}+2sqrt{5}
F left(sqrt{14}-sqrt{10}right)left(sqrt{6+sqrt{35}}right)
G sqrt{11-4sqrt{7}}-sqrt{2}timessqrt{8+3sqrt{7}}
Đọc tiếp
Rút gọn:
A = \(\sqrt{2}\left(\sqrt{8}-\sqrt{32}-2\sqrt{18}\right)\)
B = \(\left(\sqrt{2}-\sqrt{3-\sqrt{5}}\right)\)
C = \(\sqrt{4-\sqrt{7}}-\sqrt{4+\sqrt{7}}\)
D = \(\sqrt{3}-\sqrt{2}-\sqrt{\sqrt{3}+\sqrt{2}}\)
E = \(\left(\sqrt{2}-\sqrt{3}+\sqrt{5}\right)\sqrt{2}+2\sqrt{5}\)
F = \(\left(\sqrt{14}-\sqrt{10}\right)\left(\sqrt{6+\sqrt{35}}\right)\)
G = \(\sqrt{11-4\sqrt{7}}-\sqrt{2}\times\sqrt{8+3\sqrt{7}}\)
B left(sqrt{2}-sqrt{3-sqrt{5}}right)sqrt{2}
C sqrt{4-sqrt{7}}-sqrt{4}+sqrt{7}
D sqrt{3}-sqrt{2}-sqrt{sqrt{3}+sqrt{2}}
E sqrt{4+2sqrt{2}}.sqrt{2+sqrt{2+sqrt{2}}}.sqrt{2-sqrt{2+sqrt{2}}}
F left(sqrt{2}-sqrt{3+sqrt{5}}right)sqrt{2}+2sqrt{5}
G left(sqrt{14}-sqrt{10}right).left(sqrt{6+sqrt{35}}right)
H sqrt{11-4sqrt{7}}-sqrt{2}.sqrt{8+3sqrt{7}}
Đọc tiếp
B= \(\left(\sqrt{2}-\sqrt{3-\sqrt{5}}\right)\sqrt{2}\)
C= \(\sqrt{4-\sqrt{7}}-\sqrt{4}+\sqrt{7}\)
D= \(\sqrt{3}-\sqrt{2}-\sqrt{\sqrt{3}+\sqrt{2}}\)
E= \(\sqrt{4+2\sqrt{2}}.\sqrt{2+\sqrt{2+\sqrt{2}}}.\sqrt{2-\sqrt{2+\sqrt{2}}}\)
F= \(\left(\sqrt{2}-\sqrt{3+\sqrt{5}}\right)\sqrt{2}+2\sqrt{5}\)
G= \(\left(\sqrt{14}-\sqrt{10}\right).\left(\sqrt{6+\sqrt{35}}\right)\)
H= \(\sqrt{11-4\sqrt{7}}-\sqrt{2}.\sqrt{8+3\sqrt{7}}\)
1) Tính
a) \(\sqrt{46-6\sqrt{5}}-\sqrt{29-12\sqrt{5}}\)
b) \(\sqrt{13-\sqrt{160}}-\sqrt{53+4\sqrt{90}}\)
c) \(\left(3-\sqrt{2}\right)\sqrt{7+4\sqrt{3}}\)
d) \(\left(\sqrt{7}-\sqrt{3}\right)\sqrt{10+2\sqrt{21}}\)
e) \(\left(3\sqrt{2}+10\right)\sqrt{38-12\sqrt{5}}\)
bài 1 : rút gọn các biểu thức sau .
a, sqrt{4left(a-3right)^2}+2sqrt{a^2+4a+4}left(a -2right)
b, sqrt{dfrac{left(x-2right)^2}{left(3-2right)^2}}+dfrac{x^2-1}{x-3}left(x 3right)
c, 4x-sqrt{8}+dfrac{sqrt{x^3+2x^2}}{sqrt{x+2}}
bài 2 thực hiện phép tính :
a, sqrt{8-sqrt[2]{7}}timessqrt{8+sqrt[2]{7}}
b, sqrt{4+sqrt{8}+}+sqrt{2}+sqrt{2+sqrt{2}}timessqrt{2-sqrt{2+2}}
c, left(4+sqrt{15}right)timessqrt{10}-sqrt{6}timessqrt{4-sqrt{15}}
d, left(2+sqrt{3}right)^2-left(2-sqrt{3}right)timesleft(2+sqr...
Đọc tiếp
bài 1 : rút gọn các biểu thức sau .
a, \(\sqrt{4\left(a-3\right)^2}+2\sqrt{a^2+4a+4}\left(a< -2\right)\)
b, \(\sqrt{\dfrac{\left(x-2\right)^2}{\left(3-2\right)^2}}+\dfrac{x^2-1}{x-3}\left(x< 3\right)\)
c, \(4x-\sqrt{8}+\dfrac{\sqrt{x^3+2x^2}}{\sqrt{x+2}}\)
bài 2 thực hiện phép tính :\
a, \(\sqrt{8-\sqrt[2]{7}}\times\sqrt{8+\sqrt[2]{7}}\)
b, \(\sqrt{4+\sqrt{8}+}+\sqrt{2}+\sqrt{2+\sqrt{2}}\times\sqrt{2-\sqrt{2+2}}\)
c, \(\left(4+\sqrt{15}\right)\times\sqrt{10}-\sqrt{6}\times\sqrt{4-\sqrt{15}}\)
d, \(\left(2+\sqrt{3}\right)^2-\left(2-\sqrt{3}\right)\times\left(2+\sqrt{3}\right)\)
Tính
a) sqrt{left(4-2sqrt{3}right).left(13+4sqrt{3}right)}
b) left(sqrt{3}-2right).left(sqrt{6}+sqrt{2}right).sqrt{sqrt{3}+2}
c)left(3+sqrt{5}right).left(sqrt{10}-sqrt{2}right).sqrt{3-sqrt{5}}
d) left(4+sqrt{15}right).left(sqrt{10}-sqrt{6}right).sqrt{4-sqrt{15}}
Giúp mk với, mk hứa sẽ tick cho.Cảm ơn nhiều!!
Đọc tiếp
Tính
a) \(\sqrt{\left(4-2\sqrt{3}\right).\left(13+4\sqrt{3}\right)}\)
b) \(\left(\sqrt{3}-2\right).\left(\sqrt{6}+\sqrt{2}\right).\sqrt{\sqrt{3}+2}\)
c)\(\left(3+\sqrt{5}\right).\left(\sqrt{10}-\sqrt{2}\right).\sqrt{3-\sqrt{5}}\)
d) \(\left(4+\sqrt{15}\right).\left(\sqrt{10}-\sqrt{6}\right).\sqrt{4-\sqrt{15}}\)
Giúp mk với, mk hứa sẽ tick cho.Cảm ơn nhiều!!
1. Tính
a. \(\left(4+\sqrt{15}\right)\left(\sqrt{10}-\sqrt{6}\right)\sqrt{4-\sqrt{15}}\)
b.\(\sqrt{3-\sqrt{5}}\left(\sqrt{10}-\sqrt{2}\right)\left(3+\sqrt{5}\right)\)
c.\(\dfrac{\sqrt{\sqrt{5}+2}+\sqrt{\sqrt{5}-2}}{\sqrt{\sqrt{5}+1}}-\sqrt{3-2\sqrt{2}}\)
Rút gọn biểu thức
a. left(2sqrt{5}-sqrt{7}right)left(2sqrt{5}+sqrt{7}right)
b.left(5sqrt{2}+2sqrt{3}right)left(2sqrt{3}-5sqrt{2}right)
c. sqrt{9+4sqrt{5}}
d. sqrt{14-6sqrt{5}}+sqrt{14+6sqrt{5}}
e. sqrt{55-6sqrt{6}}
f. sqrt{21-6sqrt{6}}
Đọc tiếp
Rút gọn biểu thức
a. \(\left(2\sqrt{5}-\sqrt{7}\right)\left(2\sqrt{5}+\sqrt{7}\right)\)
b.\(\left(5\sqrt{2}+2\sqrt{3}\right)\left(2\sqrt{3}-5\sqrt{2}\right)\)
c. \(\sqrt{9+4\sqrt{5}}\)
d. \(\sqrt{14-6\sqrt{5}}+\sqrt{14+6\sqrt{5}}\)
e. \(\sqrt{55-6\sqrt{6}}\)
f. \(\sqrt{21-6\sqrt{6}}\)
\(\sqrt{4+2\sqrt[]{}3}\)
\(\left(\sqrt{ }7+\sqrt{ }3\right)^2\)
\(\left(\sqrt{ }5-\sqrt{ }3+1\right)\left(\sqrt{ }5-1\right)\)
\(\left(5\sqrt{ }3-2\sqrt{ }7\right)\left(5\sqrt{ }3+2\sqrt{ }7\right)\)
tính các biểu thức sau
Tính
a, \(A=\left(\sqrt{6}+\sqrt{10}\right)\sqrt{4-\sqrt{15}}\)
b, \(B=\left(3+\sqrt{5}\right)\left(\sqrt{10}-\sqrt{2}\right)\sqrt{3-\sqrt{5}}\)