PLEASE HELP ME WITH THIS QUESTION ASAP. IF CORRECT I WILL GIVE BRAINLIEST.

Answer:
14x² - 6x - 2
Step-by-step explanation:
We want to find the area of the shaded, the area of the non-shaded, and then subtract the non-shaded area from the shades. SO:
The area of the non-shaded is x(x + 7) which is equal to x² + 7x.
The area of the shaded is (5x + 2)(3x - 1) Which is equal to 15x² - 5x + 6x - 2, which is equal to 15x² + x -2.
Now we subtract x² + 7x from 15x² + x - 2.
15x² + x - 2 - (x² + 7x).
Distribute the negative.
15x² + x - 2 - x² - 7x.
Combine like terms. 14x² - 6x - 2.