C = \(\dfrac{3^{10}.10+3^{10}.6}{3^6.9.2^{2^2}}\)
C = \(\dfrac{3^{10}.\left(10+6\right)}{3^6.3^2.2^4}\)
C = \(\dfrac{3^{10}16}{3^8.16}\)
C = 32
C = 9
tính hợp lý :
a,6/5/12:2/3/4+11/1/4(1/3-1/4)
b,10/2/9+(2/2/5-7/2/9)
c,6/3/10-(3/4/7+2/3/10)
Tìm số tự nhiên x:
a) 3^10 . 3^2x -1 . 2^10 = 6^10 . 9^13 . 27
b) 5^3x - 2 . 125 =5^13. 125^5
c) 3^x+2 . 2^x= 9. 6^10
d) 3^x - 3^x = 26. 9^7
Tính 1) 4/5 +13/18 2) 3/7 -11/8 3) -7/10 - -4/5 4) 3/20 -1/25 5) 2/3 - 5/6 6) 1/4 + -3/8 - 19/10 7) -9/10 - -7/18 8) 3/10 - 11/18 9) 3/5 -5/6 + -7/12 10) -4/9 - (-5 )/6 - 3/8
C= 2^19 * 27^3 + 15* 4^9 *9^4 / 6^9 * 2^10 +12^10
D= 4^7 * 2^8 / 3 * 2^15 * 16^2 - 5 * 2^2 * (2^10)^2
Rất cảm ơn vì giúp mk
1) Thuc hien phep tinh:
a) 4^6 × 9^2 / 6^3 × 8^2
b) 5^6 × 15^4 /5^4 × 3^3
c) 3^9 - 2^3 × 3^7 + 2^10 × 3^2 - 2^13 / 3^10 - 2^2 × 3^7 + 2^10 × 3^3 - 2^12
d) (1/9)^10 : (1/3)^20
e) (1/64)^5 × (1/4)^7
2) Chung minh rang:
a)2014^100+2014^99 chia het cho 2015
b) 4^13+32^5-8^8 chia het cho 5
c) 81^27-27^9-9^13 chia het cho 405
Help me!! Pleass!!
tinh nhanh
a,A=100+98+96+...+2-97-95-...-1
b,B=1+2-3-4+5+6-7-8+9+10-11-12+...-229-330+301+302
c,C=41*66+34*41/3+7+11+...+79
d,D=1+2+3+...+200/6+8+10+...+34
e,E=1*5*6+2*10*12+20*24*4+9*45*54/1*3*5+2*6*10+4*12*20+9*27*45
a) 7/5.8/19+7/5.12/19-7/5.1/19
b)-3/5.5/7+-3/5.3/7+-3/5.6/7
c)10 2/9 + (2 2/5 -7 2/9)
d) 6 3/10 -(3 4/7+ 2 3/10)
GIÚP MÌNH VỚI Ạ. MÌNH CẦN GẤP. CẢM ƠN MỌI NGƯỜI NHÌU!
Tính A= 1 - 1/2 +1/3 -1/4 +...+ 1/9 - 1/10
B= (1 + 1/2 + 1/3 +...+1/10) - 2(1/2 + 1/4 +...+ 1/10)
C= 1/6 + 1/7 + 1/8 + 1/9 + 1/10
Bài 1: Tính:
A= ((2^12 . 3^5 - 4^6 . 9^3 ) / 9( 2^2 . 3 )^6 + (8^4 . 3^5))) - ((5^10 . 7^3 - 25^2 . 49^2) / (( 125 . 7 )^3 + 5^9 . 14^3))
B= (2^9 . 27^3 + 15 . 4^9 . 9^4) / (6^9 . 2^0 + 12^10)
