Question

Evaluate the expression when a=3 and b=4

2a2 + b =

Answer 1

22......................

Answer 2

The answer is 22 if the problem is:

Evaluate
`2a^2+b` for
`a=3 \text{ and } b=4`.

Explanation:

Assuming you want to evaluate:

`2a^2+b` for
`a=3 \text{ and } b=4`,

we first to plug in the given values into the given expression.

`2(3)^2+4`

PE(MD)(AS) tells us we need to do our exponents giving we have no symbols acting as grouping symbols:

`2(9)+4`

PE(MD)(AS) tells us to do multiplication and division as it occurs left to right.

`18+4`

PE(MD)(AS) tells to do addition and subtraction as it occurs left to right.

`22`