Answer:
14x² - 21
Step-by-step explanation:
In order to expand the expression, you simply need to multiply 7 by 2x², then by -3.
2x² × 7 = 14x²
-3 × 7 = -21
Therefore, the area of the entire rectangle is 14x² - 21 (you will not need to solve for x, as there is no way to do that without knowing the area first).
