Question

Can you help me to do this problem please. What is the valencia of 2x^2 y^-2 for x = 3 and y-2

Answer 1

Let's evaluate the expression:

`2x^2y^(-2)`
`\begin{gathered} x=3 \\ y=2 \end{gathered}`

`\begin{gathered} y^(-2)=(1)/(y^2) \\ so\colon \\ 2(3)^2(1)/((2)^2)=(2*9)/(4)=(18)/(4)=(9)/(2) \end{gathered}`