Question

tính nhanh : 
A = 125(125+150) + 75^2

Answer 1

A = 125(125 + 150) + 75²

A = 34375 + 75²

A = 34375 + 5652

A = 40000

Answer 2

\(A=125\left(125+150\right)+75^2\)

\(=125^2+125.150+75^2\)

\(=\left(125+75\right)^2\)

\(=200^2=40000\)