Question

Evaluate this exponential expression. 3 • (5 + 4)2 – 42 =

Answer 1

12

Explanation:

First,you need to do the cacul of the parenthese,second,you solve by multiply and after that,by substract the answer by 42.

The answer will be 12

Answer 2

Answer:
`=201`

Explanation:

Given the exponential expression
`3(5 + 4)^2 - 42`, it is necessary to follow these steps to evaluate it:

Make he addition inside the parentheses:

`3(5 + 4)^2 - 42 =3(9)^2 - 42`

The exponent 2 indicates that you must multiply 9 by itself twice, then:

`=3(9*9) - 42=3(81)-42`

Now you need to multoply 3 by 81:

`=243-42`

And finally, you must make the subtraction indicated. Then:

`=201`