Answer:
Answer A, 4x^2-2x-10
Step-by-step explanation:
Since we are subtracting the first listed equation from the second, we have to switch the order of those two. The second row will all become negative (just the second, not the first) since this is subtraction. You add the numbers from there and remember to keep your coefficients and variables in line (x^2 to x^2, x to x, etc.)
