Please help me. I'm lost

Question

A community is developing plans for a pool and hot tub. The community plans to form a swim team, so the pool must be built to certain dimensions. Answer the questions to identify possible dimensions of the deck around the pool and hot tub.The dimensions of the pool are to be 25 yards by 9 yards. The deck will be the same width on all sides of the pool. Including the deck, the total pool area has a length of (x + 25) yards, and a width of (x + 9) yards.
1. Write an equation representing the total area of the pool and the pool deck. Use y to represent the total area.

 

2.Rewrite the equation in standard form. Hint use FOIL method

 

3.Rewrite the equation from part b in vertex form by completing the square. Hint: Move the constant to the other side, add (b/2^2) to each side, rewrite the right side as a perfect square trinomial, and finally isolate Y.

 

Answer 1

1. A = lw

(x + 25)(x + 9)

 

2. y = (x + 25)(x + 9)

y = x² + 25x + 9x + 225

y = x² + 34x + 225

 

3. y - 225 = x² + 34x

y - 225 + 289 = x² + 34x + 289

y + 64 = (x + 17)²

y = (x + 17)² - 64