\(=\dfrac{2.3^9.2^9-\left(2^2\right)^5.\left(3^2\right)^4}{2^{10}.3^7+3^7.2^7.2^3.5}\\ =\dfrac{2^{10}.3^9-2^{10}.3^8}{2^{10}.3^7+3^7.2^{10}.5}\\ =\dfrac{2^{10}.3^8\left(3-1\right)}{2^{10}.3^7\left(1+5\right)}\\ =\dfrac{3.2}{6}=\dfrac{6}{6}=1\)
\(=\dfrac{2.3^9.2^9-\left(2^2\right)^5.\left(3^2\right)^4}{2^{10}.3^7+3^7.2^7.2^3.5}\\ =\dfrac{2^{10}.3^9-2^{10}.3^8}{2^{10}.3^7+3^7.2^{10}.5}\\ =\dfrac{2^{10}.3^8\left(3-1\right)}{2^{10}.3^7\left(1+5\right)}\\ =\dfrac{3.2}{6}=\dfrac{6}{6}=1\)
tính nhanh:
4^5.9^4-2.6^9/2^10.3^8+6^8.20
tính giá trị của biểu thức : ( 4^5.9^4+2.6^9) : (2^10.3^8-6^8.2)
chú ý : (dấu chấm trong biểu thức và dấu nhân)
Help me!!!Thanks các pạn nhìu nha.
Tính hợp lý:
1)(1/2+1/3+1/4+...+1/100):(99/1+98/2+97/3+...+1/99)
2)A=1/3+1/3^2+1/3^3+...+1/3^99
3)4^5.9^4-2.6^9/2^10.3^8+6^8.20
10.6^9-4^5.9^4/2^10.3^8+6^8.28
tính:M=5^4.9^4-2.6^9/2^10.3^8+6^8.20
Tính: 4^5.9^4-10.6^9
2^10.3^8+6^8.28
Tính:\(B=\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
thực hiện phép tính
A=\(\frac{2^{12}.3^4-4^5.9^2}{\left(2^2.3\right)^6+8^4.3^5}\)
B=\(\frac{8^5.5^8-2^5.10^9}{2^{16}.5^7+20^8}\)
C=\(\frac{4^5.9^4-2.6^4}{2^{10}.3^8+6^8.2^0}\)
1. Rút gọn:
\(B=\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)