a) Ta có: \(x^2yz^2:x^2y\)
\(=\left(x^2:x^2\right)\cdot\left(y:y\right)\cdot z^2\)
\(=z^2\)
b) Ta có: \(x^2y:xy^2z^2\)
\(=\frac{x^2y}{xy^2z^2}\)
\(=\frac{x}{yz^2}\)
c) Ta có: \(\left(x+y\right)^5:\left(x+y\right)^3\)
\(=\left(x+y\right)^{5-3}\)
\(=\left(x+y\right)^2=x^2+2xy+y^2\)