\(P=\dfrac{14^5.9^4-6^9.49^2}{2^{10}.49^3.3^8+6^8.7^5.13}\)
\(=\dfrac{2^5.7^5.3^8-2^9.3^9.7^4}{2^{10}.7^6.3^8+2^8.3^8.7^5.13}\)
\(=\dfrac{2^5.7^4.3^8\left(7-2^4.3\right)}{2^8.3^8.7^5\left(2^2.7+13\right)}\)
\(=\dfrac{-41}{2^3.7.41}\)
\(=\dfrac{-1}{56}\)
Rút gọn:P=\(\dfrac{14^5.9^4-6^9.49^2}{2^{10}.49^3.3^8+6^8.7^5.13}\)
Giups mk vs các bn ơi,khó quá,mai mk pải nộp rùi
Rút gọn biểu thức:
A = \(\dfrac{4^5.9^4 - 2.6^9}{2^{10}3^8 + 6^8.20}\)
giúp mk vs :(( ( tìm x )
\(\dfrac{-4}{x}=\dfrac{x}{-49}\); \(\dfrac{3.5}{x-3}=\dfrac{5}{3}\)
(2x + 1) : 2 = 12 : 3 ; ( 2x - 14 ): 3= 12 :9
giúp mk nhaa vội lém á :((
Rút gọn :
A = \(\frac{2.8^4.27^8+4.6^9}{2^7.6^7+2^7.40.9^4}\)
B = \(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
\(\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
Bài 1 . Tính
\(B=\dfrac{1}{1-\dfrac{1}{1-2^4}}+\dfrac{1}{1+\dfrac{1}{1+2-1}}\)
Giups mk nhanh na các bn
Tính
a, A = \(\dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}\)
b, B = \(\left(\dfrac{3}{7}.\dfrac{4}{15}+\dfrac{1}{3}.9^{15}\right).\dfrac{1}{3}.\dfrac{6^8}{12^4}\)
c, C = \(\dfrac{10^4.81-16.15^2}{4^4.675}\)
Tính
A=\(\dfrac{4.5^{10}.5^{10}}{75^{10}}\) B=\(\dfrac{\left(0,8\right)^5}{\left(0,4\right)^6}\)
C=\(\dfrac{2^{15}.9^4}{6^6.8^3}\) D=\(\dfrac{8^{10}+4^{10}}{8^4+4^{11}}\)
Làm hộ mk nha làm đk câu nào thì làm nha . Mk đang cần gấp AI xg thì tớ tick cko !!!
1) \(3^x=9^{-6}.27^{-5}.81^8\) 2) \(2^x=8^3.8^{-10}.8^3\) 3) \(2^x=\dfrac{4^7}{4^3}\) MK CẦU XIN CÁC BẠN HÃY GIÚP MK !!!!!!!!!!
