Question

3^2 - (5 x 2^3) HELP PLEASE I need step by step

Answer 1

Answer:

-31

Step-by-step explanation:

1. 3^2 - (5 * 2^3)

2. 2*2*2=8

3. 3^2 - (5 * 8)

4. 5*8=40

5. 3^2 - 40

6. 3*3=9

7. 9 - 40= -31

REMEMBER PEMDAS MEANS FIRST COME () NEXT IS ExponentsTHEN Multiplication and Division (from left to right) FINALLY Addition and Subtraction (from left to right).

I’m not sure if it’s correct or not but I tried my best…

Answer 2

Answer:

$-31$

Step-by-step explanation:

We need to find the value of: $3^2 - (5 * 2^3)$.

First we need to look at the BIDMAS rule.

B - Brackets

I - Indices

D - Division

M - Multiplication

A - Addition

S - Subtraction

First we need to work out what is in the brackets which is: $(5 * 2^3)$

We look at the next rule which is Indices so we do $2^3$ first.

$2^3 = 2 * 2 * 2 = 8$

Then we multiply it by the five which gets us:

$(5 * 8) =40$

Now that we've finished with what is inside the brackets, we can work out what's outside which is:

$3^2 = 3 * 3 = 9$.

Now we've simplified it down to:

$9 - (40)$

Which gets us:

$9 - 40 = -31$