Question

B=\(\frac{4^2.25^2+32.125}{2^3.5^2}\)

 

Answer 1

\(B=\frac{4^2.25^2+32.125}{2^3.5^2}\)

   \(=\frac{\left(2^2\right)^2.\left(5^2\right)^2+2^5.5^3}{2^3.5^2}\)

   \(=\frac{2^4.5^4+2^5.5^3}{2^3.5^2}\)

   \(=\frac{2^3.5^2.\left(2.5^2+2^2.5\right)}{2^3.5^2}\)

   \(=2.5^2+2^2.5\)

   \(=2.25+4.5\)

\(=50+20=70\)

Answer 2

\(B=\frac{2^4.5^4+2^5.5^3}{2^3.5^2}=\frac{2^4.5^3\left(5+2\right)}{2^3.5^2}=2.5.7=70\)

Answer 3

thanks nhiều