Question

Evaluate the expression if m = 3.

3m^2


(SHOW YOUR WORK)

Answer 1

The value of given expression when m = 3 is 27

Solution:

Given expression is
`3m^2`

We have to evaluate the given expression for m = 3

To find for m is equal to 3, substitute m = 3 in given expression

From given expression,

`\rightarrow 3m^2`

Plug in m = 3 in above expression

`\rightarrow 3(3)^2` ------ eqn 1

We know that,

`a^2` can be expanded as,

`a^2=a * a`

Applying this in eqn 1, we get

`\rightarrow 3(3)^2=3 * (3 * 3)`

Simplify the above expression

`\rightarrow 3(3)^2=3 * (3 * 3) = 3 * 9 = 27`

Therefore, for m = 3 we get,

`\rightarrow 3(3)^2=27`

Thus value of given expression when m = 3 is found