Các câu hỏi tương tự
1+2+3+4+5+6+7+8+9-1-2-3-4-5-6-7-8-9*1*2*3*4*5*6*7*8*9:1:2:3:4:5:6:7:8:9=???
a) 11+6\(\sqrt{2}\) = \(\left(3+\sqrt{2}\right)^2\)
b) 8-2\(\sqrt{7}\)=\(\left(\sqrt{7}-1\right)^2\)
c)\(\sqrt{11+6\sqrt{2}}=\sqrt{11-6\sqrt{2}}=6\)
d) \(\sqrt{8-2\sqrt{7}}-\sqrt{8+2\sqrt{7}}=-2\)
\(\sqrt{8-2\sqrt{7}}-\sqrt{8+2\sqrt{7}}\)
Rút gọn biểu thức:
a) 4^5 . 9^4 - 2 . 6^9 / 2^10 . 3^8 + 6^8 .20
b)2 . 8^4 . 27^2 + 4 . 6^9 / 2^7 . 6^7 + 2^7 . 40 .9^4
1. Rút Gọn
a)√6-2√5
b)√8+2√7
2 Tính
a) √(√10-3)2 -√10
b)√(5+√7)2 - √8-2√7
5/(√7+√2) - √(8-2√7) +√2
5/√7 +√2 -√8-2√7 +√2
5/√7+√2 - √8-2√7 +√2
(√28 -2 √14 + √7) √7 +7 √ 8
1*1*2*2*3*3=0
0*0*1*1*2*2= -100
vay
9*9*8*8*7*7=?