Question

A²-b²evaluation if a=4 and b=-2​

Answer 1

Answer:

12

Step-by-step explanation:

(4)^2-(-2)^2

16-4=12

Answer 2

The Answer is 20

Explanation
If a is 4 then 4 to the power of 2 would be 16. If b is -2 and it is applied to the power of 2. Then it would be -4. But since there is another minus sign behind the B, you would make the sign a addition sign. So it would basically be 16 plus 4, which is 20