Question

Find the area. Simplify your answer.
2x–9
2x+6

Answer 1

2х-9=0
2х=9
х=9:2
х=4,5

2х+6=0
2х=6
х=6:2
х=3

Answer 2

Answer: $4x^{2} - 6x - 54$

1. We use formula:
$\boxed{P_{rectangle} = a \cdot b}$

$P_{rectangle} = a \cdot b \\ \\ \\ P = (2x - 9)(2x + 6) \\ \\ \\ P = 4x^{2} + 12x - 18x - 54 \\ \\ \\ P = 4x^{2} - 6x - 54$

So the area is equal to: $4x^{2} - 6x - 54$. Hope this helps!