Question

Find the sum of (11x ^ 2 + 7xy - 5y ^ 2), (- 11x ^ 2 + 6xy + 7y ^ 2) and (7x ^ 3 + 5x ^ 2 * y + 3xy)​

Answer 1

Answer:

5x² +16xy +2y² +7x³

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Step-by-step explanation:

using vertical method, we have:

11x² +7xy -5y²

-11x² +6xy +7y²

5x²  +3xy  +0  +7x³

=

5x² +16xy +2y² +7x³