It's a quadratic equation in disguise. If you let , then , and we can rewrite the equation as
Solve for however you like; we get and .
But we want to solve for , so we have
Answer:
A = x^2 + 5x - 14
Step-by-step explanation:
A = L × W
A = (x+7) × (x-2)
A = x^2 + 7x - 2x - 14