Question

solve the pair of equation x+y=a-b,ax-by=a^2+b^2​

Answer 1

Step-by-step explanation:

Let,

x+y=a-b is the first equation.

ax-by=a^2+b^2 be the second equation.

Let us solve the second equation,

ax-by=a^2+b^2

a+b(x-y)=a^2+b^2

x-y=a^2+b^2/a+b

x-y=a+b.a+b/a+b

x-y=a+b

Now,

Add 2-1

x-y=a+b

x+y=a-b =0