Question

the sum of two expression is x square minus y square + 3 Y - 5 if one of them is 2 y square + 2 x square - 10 find the other

Answer 1

sum of two expressions = x²-y²+3y-5

one of them be 2y²+2x²-10

then the other is

let the other be a

=>a+(2y²+2x²-10)=x²-y²+3y-5

=>a= (x²-2x²)+(-y²-2y²)+3y+(-5+10)

=>a= -x²-3y²+3y+5