Question

prove
that 3a^2-1
never be
a perfect
square.​

Answer 1

hey mate here is your solution

Answer 2

Answer:

Prove that 3a2-1 is never a perfect square

= 3 k + 2, Here k = a2 − 1. And we know that the square of an integer must either be of the form 3 k or 3k + 1. Hence, 3a2 - 1 = 3k + 2 cannot be a perfect square. 3a2 - 1 = 3 ( 1 )2 - 1 = 2 , That is not a perfect square .