Question

Add 8x ^ 2 + 7xy - 6y ^ 2 and 3x ^ 2 + 4xy + 3y ^ 2​

Answer 1

Answer:

11x^2+10xy-3y^2.

Step-by-step explanation:

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

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

11x^2+10xy-3y^2 .

hope it helps you.

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Answer 2

Answer:

Add $8x ^ 2 + 7xy - 6y ^ 2$ and $3x ^ 2 + 4xy + 3y ^ 2$​ then we get $11x^2 +11xy - 3y^2$

Step-by-step explanation:

$(8x ^ 2 + 7xy - 6y ^ 2)+ (3x ^ 2 + 4xy + 3y ^ 2)\\= 8x ^ 2 + 7xy - 6y ^ 2+ 3x ^ 2 + 4xy + 3y ^ 2$

Rearrange like terms and then add

$= 8x ^ 2+ 3x ^ 2 + 7xy + 4xy- 6y ^ 2 + 3y ^ 2\\= (8 +3)x^2 + (7 + 4)xy + (-6+3)y^2\\= 11x^2 +11xy - 3y^2$