Answer:
The result of the subtraction is 17x^2 - 9x - 9.
Explanation:
To subtract the expression (7x^2 - 12x + 3) - (-10x^2 - 3x + 12), you can distribute the negative sign inside the second set of parentheses and then combine like terms:
(7x^2 - 12x + 3) + (10x^2 + 3x - 12)
Now, add the terms with the same degree:
(7x^2 + 10x^2) + (-12x + 3x) + (3 - 12)
Combine like terms:
17x^2 - 9x - 9
So, the result of the subtraction is 17x^2 - 9x - 9.