Question

Add: 8x2 + 7xy – 6y2 , 4x2 – 3xy + 2y2 and -4x2 + xy – y2

Answer 1

The given terms in the question can be added by collecting like terms. So that the addition is:

8$x^{2}$ + 5xy -5$y^{2}$

The addition of terms involve adding like terms so as to simplify the final expression.

Thus considering the terms in the given question, the addition would give:

(8$x^{2}$ + 7xy - 6$y^{2}$) + (4

open the brackets and collect like terms to have;

8$x^{2}$ + 7xy - 6$y^{2}$ + 4

8$x^{2}$ + 4

8$x^{2}$ + 5xy -5$y^{2}$

Therefore on adding the given terms, the expression derived as answer is:

8$x^{2}$ + 5xy -5$y^{2}$

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