Question

What is the value of 8+ h² when h = 3?

Answer 1

Solution: 17

Detailed explanation:

`\circ` Stick in the value of h, which we're provided with (3)

`--\mapsto\boldsymbol{8+(3)^2}` *

*Be careful here! Here it's very easy to make a mistake, if you aren't familiar with the Order of Operations. The Order of Operations is shown below
`\swarrow`

P=Parentheses

This operation tells us to perform the operations in the parentheses first.

E=Exponents

This one tells us to evaluate all exponents, if any are present.

M=Multiplication | D=Division

These two are completely interchangeable; you can perform Multiplication first and then division, or the other way around.

A=Addition | S=Subtraction

Like the two operations above, A and S are also completely interchangeable.

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Using the information above, let's evaluate (find the value of) the expression
`8+h^2`.

We stick in the value of h, 3

`\pmb{8+3^2}` is what we obtain

Here we see that exponents are present (3^2) so we'll evaluate that first, as P.E.M.D.A.S. tells us to do.

`\pmb{8+9}` (3^2=3*3)

And Now we just need to add the numbers

`\boldsymbol{17}`

Voila! There's our answer!

Cheers!! ^-^

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Hope I helped. Best wishes.

Reach far. Aim high. Dream big.

`\cal ReFlEcTioN`

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Answer 2

17

Explanation:

8 + h^2

Let h = 3

8 + 3^2

We find the value of 3^2 first using PEMDAS

8 + 9

Then add

17

The result is 17