Question

b) The sum of two expressions is x2 – y2 + 3y - 5. If one of them is 2y2 + 2x2 -10, find the other expression?

Answer 1

Answer:

Let the other expression be x.

According to question,

X + 2y²+2x²-10 = x²-y²+3y-5

X = (x²-y²+3y-5) - (2y²+2x²-10)

X = (x²-2x²) + (-y²-2y²) + 3y + (-5+10)

X = -x²-3y²+3y+5