Question

1. Rút gọn 

A= -56.49+(-49).44/73.14+(-14).(-27)

B=2^6.39+4^3.24/(-4)^2.17+2^4.46

help me

Answer 1

Bài 1: Rút gọn

\(A=\dfrac{-56\cdot49+\left(-49\right)\cdot44}{73\cdot14+\left(-14\right)\cdot\left(-27\right)}\)

\(=\dfrac{49\cdot\left(-56-44\right)}{14\cdot\left(73+27\right)}\)

\(=\dfrac{-49\cdot100}{14\cdot100}=\dfrac{-7}{2}\)