Question

x+y=a+b ax-by=a²-b² using cross multiplication method
maths question ​

Answer 1

Answer:

X+y=a-b,ax-by=a2+b2 by cross multiplication

The above equation is generally written as : x/ b1 c2 - b2 c1 = y/ c1 a2 - c2 a1 = 1/a1 b2 - a2 b1.

SOLUTION: x + y= a + b , ax – by= a² - b².

The given system of equations may be written as: x + y-( a + b)= 0 , ax – by -( a² - b²)= 0. a1= 1, b1= 1, c1= -(a+b) a2= a , b2= -b , c2= -(a²-b²) x y 1.