SOLUTION: Find the X intercepts, and y intercepts. -x^2+5x+36 I know that I have to factor 36, to get my x intercepts, so I came up with (-6,0),(6,0) But my assignment tells m

Question 266634: Find the X intercepts, and y intercepts.
-x^2+5x+36
I know that I have to factor 36, to get my x intercepts, so I came up with
(-6,0),(6,0)
But my assignment tells me this is wrong.
I believe that the y intercept would be
(0,36), is this correct?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
To find the x-intercept(s), you need to set the expression equal to zero and solve for 'x'

Set the expression equal to zero.

Notice that the quadratic is in the form of where , , and

Let's use the quadratic formula to solve for "x":

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Rewrite as

Add to to get

Multiply and to get .

Take the square root of to get .

or Break up the expression.

or Combine like terms.

or Simplify.

So the solutions are or

So this means that the x-intercepts are (-4,0) and (9,0)

For the y-intercept, you are correct. The y-intercept is (0,36)
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