Question

please answer this question....!!!

need step by step explanation....^_^​

Answer 1

a^2 + 3b^2 = 28

Put b= +-2

a^2 + 12 = 28

a^2 = 16

a= 4

So (4,2)( 4,-2) ( As a> b So a= -4 neglected)

Take b= -3

a^2 +3(-3)^2 = 28

a^2 = 1

a= 1, -1

( 1,-3)( -1,-3)

Take b= +-1

a^2 + 3 = 28

a^2 = 25

a= 5 ( -5 neglected as a>b)

(5,1)( 5,-1)

So its (6)