If a is Negative integers and b is positive integers and a ≠ 0 which of the following equal 0 ?
Choose the correct choice from the following options
A) a-b B) a^2+b^2 C) a*b D) a/b E) a^2-b^2
All options Except E gives Non-zero answer.   a should be negative integers and b should be an positive integers.   (E)a^2-b^2   If b=0,a^2-b^2=a^2.   a is negative integers. Any square of the negative integers gives us a positive numbers.   So The option a^2-b^2 is answer
<result>E</result>
If a is Negative integers and b is positive integers and a ≠ 0 which of the following equal 0 ?