Question

(a-b)x+(a+b)y=2a2-2b2,ax-by=a2+b2 solve using cross multiplication ​

Answer 1

Answer:

Step-by-step explanation:

We have

(a-b)x+(a+b)y -2a^2+ 2b^2 = 0

ax-by-a^2-b^2=0

here a1 = a-b ,b1 = a+b, c1 =-2a^2+2b^2

a2= a , b2 = -b , c2 = -a^2-b^2

so,

x= b1c2- b2c1/ a1b2-a2b1

 = a+b(a^2-b^2) - (-b)(-2a^2+2b^2) / a-b(-b)-a(a+b)

=a3-ab2+a2b-b3+b(-2a2+2b2)/ a-b(-b)-a(a+b)

= a3-ab2+a2b-b3-2a2b+2b3/ a-b(-b)-a(a+b)

= a3-ab2-a2b+3/-ab+b2-a2-ab

= a3-ab2-a2b+b3/a2-b2

in this way you can find the value of y

Y = c1a2- c2a1/ a1b2-a2b1

find the value of y by yourself I gave u a hint hope this method will help you :))

Answer 2

Answer:

00000

Step-by-step explanation:

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