10^ 3+2×5^3+5^3/55
10^3 + 2*5^3 +5^3 phan 55
\(\dfrac{10^3+2\cdot5^3+5^3}{55}\)
Tinh:
a/\(\frac{10^3+2.5^3+5^3}{55}\)
b/\(2^x+2^{x+3}=144\)
c/\(2\left(x-5\right)+3\left(x-7\right)=10\)
thực hiện phép tính: 10^3+2.5^3+5^3/55
\(\frac{10^3+2,5^3+5^3}{55}\)
\(\frac{10^3+2,5^3+5^3}{55}\)
tìm x, biết :
a) 1/( x+1 ).( x+2 ) + 1/( x+2 ).( x+3 ) + 1/( x+3 ).( x+4 ) + ... + 1/( x+1999).( x+2000) = 1/x+200 = 1/5
b) 2/( x+1 ).( x+3 ) + 3/( x+3 ) .( x+6 ) + 4/( x+6 ).( x+10 ) + ... + 10/( x+45 ).( x+55 ) + 1/ x+55 = 1/6
\(\frac{10^3+2.5^3+5^3}{55}\)