Q. What is the value of 4(2sq) - 2 (3 x 5 + 1)
A. 8
B. 1
C. -16
D. - 21
I don't understand what exactly I'm doing wrong, I went ahead and put everything in the parenthesis 3 x 5 = 15 + 1 = 16 went back to 4(sq2) which equals 16 then - 2 which would be 14. Then going back and adding the two numbers together with 14 + 16 = 30 - I've also tried it other ways, but I don't know.
4(2^2) - 2 (3*5 + 1)
4(4)-2(16)
16-32
-16
Thank you so much! That makes a lot of sense.
To solve the expression 4(2^2) - 2(3 × 5 + 1), let's break it down step by step.
1. First, simplify the exponent: 2^2 = 4.
2. Next, simplify the expressions inside the parentheses: 3 × 5 = 15 and 15 + 1 = 16.
3. Now, substitute the simplified values back into the expression:
4(4) - 2(16)
4. Continue solving by multiplying and subtracting:
4 × 4 = 16
2 × 16 = 32
16 - 32 = -16
So, the final result is -16.
The answer choices you provided are:
A. 8
B. 1
C. -16
D. -21
Therefore, the correct answer is C. -16.