Question

9x²-11xy+7y²,-5xy+6y²-3x²,11x²+7xy-5y²
Add the following​

Answer 1

Answer:

(9x²- 11xy+7y²) +( -5xy+6y² -3x²) +( 11x²+7xy-5y²)

(9x²-11xy+7y²)+(-3x²-5xy+6y²)+(11x²+7xy-5y²)

9x²-3x²+11x²-11xy-5xy+7xy+7y²+6y²-5y²

17x²-9xy+8y²

i hope it helps u

Answer 2

Step by step :

(9x^2-11xy+7y^2)+(-5xy+6y^2-3x^2)+(11x^2+7xy-5y^2)

=>9x^2+11x^2-3x^2-11xy+7xy-5xy+7y^2+6y^2-5y^2

=>20x^2-3x^2-18xy-5xy-+13y^2-5y^2

=>17x^2-23xy+8y^2

I hope this will help you!!!