Question

26. The sum of two expressions is x² - y2 + 3y - 5.
If one of them is 2y + 2x - y - 10, find the other.​

Answer 1

Step-by-step explanation:

let other is x

x + 2y+2x-y-10=x^2-y^2+3y-5

x=x^2-y^2+3y-5 -(2y+2x-y-10)

x=x^2-y^2+3y-5-2y-2x+y+10

x=x^2-y^2-2x+2y+5

Answer 2

Answer:

x²-y²-2x+2y+5

Step-by-step explanation:

sum of two expression=x²-y²+3y-5

one of them=2y+2x-y-10

therefore other=(x²-y²+3y-5)-(2y+2x-y-10)

=x²-y²+3y-5-2y-2x+y+10

=x²-y²+3y-2y+y-2x-5+10

=x²-y²+2y-2x+5

=x²-y²-2x+2y+5 ans.