The formula for the area of a parallelogram is a = bh, where b is the base and h is the height. which simplified expression represents the area of the parallelogram?

The area of the parallelogram is given by A = bh
...in this case, the base b is (2x² + 2x -6) cm
And the height h is (x-4) cm,
Therefore;
 A = (2x²+2x-6) × (x-4) = (2x³+2x²-6x) - (8x²+8x-24)
    = 2x³-6x² - 14x + 24
Therefore the area of the parallelogram will be (2x³-6x²-14x+24) cm²