Question

Add the following: y2-x2, 2x2-3y2, 5y2-3x2, 6x2+2y2

Answer 1

y²-x²+2x²+3y²+5y²-3x²+6x²+2y²

=> 2x²-x²-3x²+6x²+y²+3y²+5y²+2y²

=> 4x²+11y²

Hope it helps you.

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