Question

add 4x^2-5xy+3y^2, 8x^2+7xy-6y^2,-2x^2-9​

Answer 1

Explanation:

simply add all the terms with the same coefficients-

=(4x²+8x²-2x²)+( -5xy+7xy)+(3y²-6y²)-9

=10x²+2xy-3y²-9.

Answer 2

Answer:

= 4x^2 + 8x^2 - 2x^2 + 3y^2 - 6y^2 - 5xy + 7xy - 9

= 10x^2 + (-3y^2) + 2xy - 9

= 10x^2 - 3y^2 + 2xy - 9