Question

7x^2 - 5xy + 1,11x^2 + 7xy-3,-2x^2-2xy+2

Answer 1

Answer: 17$x^{2}$

Step-by-step explanation:

$7x^{2} -5xy+1 + 11x^{2} +7xy-3 + (-2x^{2} -2xy+2)\\\\= 19x^{2} +2xy-2-2x^{2} -2xy+2\\= 17x^{2}+0+0\\= 17x^{2}$