subhendu009 wrote:

What is the value of a ?

1\(.a^2\) = \(b^2\)

2.b - a = -12

----------------------------

Press +1 KUDOS if you like my post.

From F.S 1, we have (a-b)(a+b) = 0. Insufficient.

From F.S 2, we have b-a = -12. Insufficient.

Taking both together, we know that (a-b) is not equal to zero. Thus, (a+b) = 0, and we can get the value for a. Sufficient.

C.

_________________

All that is equal and not-Deep Dive In-equality

Hit and Trial for Integral Solutions