Question

What is the value of 6/x + 2x to the second power when the x=3

Answer 1

Given expression :

`(6)/(x)+2x^2`

We have to find the value of expression at x =3

Substitute x =3 in the given expression:

`\begin{gathered} (6)/(x)+2x^2 \\ at\text{ x= 3} \\ (6)/(3)+2(3)^2 \\ 2+2(9) \\ 2+18 \\ 20 \\ \text{ So, at x =3 the }\exp ression(6)/(x)+2x^2=20 \end{gathered}`

ANswer : 20