Question

(a-b)x+(a+b)y=a^2-2ab+b^2 and (a+b)(x+y)=a^2+b^2
sove the above by cross multiplication method
fast please i will mark as brainliest :)

Answer 1

(a+b)x+ (a+b)y = (a+b)(x+y)= (a+b)²

Also, (a+b)(x+y)=a²+b²

This shows that 2ab=0 and thus ab=0

Either a=0 or b=0

Let's assume b=0

Sorry, I did not see the question correctly.