Question

Implify 2x 2 - y for x = 3 and y = -2.
20
14
16
10

Answer 1

14because2 times 3=6 times 2= 12 plus 2

Answer 2

For this case we have the following expression:

`2x ^ 2-y`

We must simplify the expression for the following values:

`x = 3\\y = -2`

Substituting we have:
`2 (3) ^ 2 - (- 2) =`

We have to:

`- * - = +`

So:

`2 (3) ^ 2 - (- 2) = 2 * 9 + 2 = 18 + 2 = 20`

The expression is simplified to 20.

Answer:

20

Option A