Xét mẫu có số số hạng là : (27 - 3) : 3 + 1 = 9 (số hạng)
Ta có :
\(\frac{\frac{5,4}{0,4}.1420+4,5.780.3}{3+6+9+...+27}=\frac{13,5.1420+45.78.3}{\frac{\left(27+3\right).9}{2}}=\frac{19170+10530}{135}=\frac{29700}{135}=220\)
\(\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
a)(x+1)2=(x+1)0
b)(2+x)+(4+x)+(6+x)+...+(52+x)=780
Tìm x
B=\(\dfrac{5.4^{15}.9^9-4.3^{20}.9^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
tính B
Tính :
\(\dfrac{5.14^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
Tính :
\(\dfrac{5.14^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
Tính :
A = \(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{7.2^{29}.27^6-5.2^9.6^{19}}\)
\(\frac{x}{27}-\frac{2}{9}=\frac{6}{18}\)
111 - {27 + [7 + 32 - 24 : 6 + (9 - 7)2]}
Tính \(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
