Question

Part 1: Solve each of the quadratic equations below. Show your work. (3 points)

x2 − 25 = 0 and x2 = 2x + 15

Part 2: Describe what the solution(s) represent to the graph of each. (2 points)

Part 3: How are the graphs alike? How are they different? (2 points)

Answer 1

I did Part 1, and 2 I just need help with Part 3.
Part 1.)
x^2 - 25 + 25 = 0 + 25 x^2 = 2x + 15
x^2 = 25 x^2 - (2x + 15) = 2x + 15 - (2x + 15)
x = +sqrt(25) x^2 - 2x - 15 = 0
Answer: x = 5, -5 (x + 3)(x - 5) = 0
x + 3 = 0 or x - 5 = 0
Answer: x = -3 or x = 5
Part 2.)
Both of the solution represents y values to equal zero and the only two points in the x-axis in which the functions crosses.

Answer 2

@Destinycholie

Answer 3

I said part 3.... @Destinycholie

Answer 4

@Jlynn89 @haleyelizabeth2017 @sammixboo can you help me pls

Answer 5

Part 3: How are the graphs alike? How are they different? (2 points)

Answer 6

Is there graphs given? If so can I see them :D

Answer 7

No sorry I think I have to make my own but all I need is how do they look alike and how their different

Answer 8

I can make a graph really quick

Answer 9

OKay thanks!

Here is some things you can ask yourself

Are the Chart Names alike or different?
Is all the x and y label on the graph the same or different?
Do they both go to the same limit?
Etc...