What is 12 x (3 +2) ^2 /2 - 10 equal to?

A. 32

B. 60

C. 140

D. 350

Side note:
When you see this symbol ( ^ ) it represents the placement of the exponent. For example: 5^2 = 5 x 5 = 25
Also, when you see this symbol ( / ) it represents division. For example: 36 / (4 + 5) = 36/ 9 = 4

Answer with Step-by-step explanation:

We are given that

Length of flat piece of material =19 inches

Width of flat piece=4 inches

An open box  is to be made from a flat piece by cutting equal squares of length  x from the corners and folding up the sides

Therefore, length of open box= inches

Width of open box=

Height of box=

Volume of box=

Substitute the values then we get

Volume of box=

Because volume of open box is always greater than  zero.

Then ,

Substitute

By adding 19 on both sides

Dividing by 2 on both sides

It means

Substitute

Adding 4 on both sides then we get

Dividing by 2 on both sides

Then,

Therefore, domain of the box =

Then ,a=0 and b=2