Answer:
18x^2 - 17x +9
Step-by-step explanation:
Original equations:
10x^2 - 10x + 2
-8x^2 +7x - 7
Calculations:
10x^2 - (-8x^2) = 18x^2
(-10x) - 7x = -17x
2 - (-7) = 9
Together, they make: 18x^2 - 17x + 9
