Question

Look at the expression below.

What is the value of the expression when A equals 18 and B equals 14?

Answer 1

1) 1/2 (18+14) - (18-14)^2
2) 1/2 (32) - (4)^2
2) 16 - 16
3) 0
Therefore, the answer is D

Answer 2

The value of the expression is D. 0.

To solve, substitute the values of a and b into the equation. Add or subtract the numbers in the parentheses first. Then, multiply the 1/2 by the number in the first parentheses, and square the number in the second parentheses. Subtract 16 from 16, and your final answer would be 0.

1/2 (18 + 14) - (18 - 14)²
1/2 (32) - (4)²
16 - 16
0

Hope this helps! :)