SOLUTION: Can someone please help, I am totally lost
Find all x-intercepts of the given function f(x).
F(x)=x-17√(x+72)
Thank you.
Algebra.Com
Question 457775: Can someone please help, I am totally lost
Find all x-intercepts of the given function f(x).
F(x)=x-17√(x+72)
Thank you.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
F(x) = x - 17√(x+72)
See if we can put it into ax^2 + bx + c form
x =
Square both sides
x^2 = 289*(x+72)
x^2 = 289x + 20808
x^2 - 289x - 20808 = 0
Solve for x using the quadratic formula
a=1; b=-289, c=-20808
:
:
Two solutions
x =
x = 348.677
and
x =
x = -59.677
:
Check both these solutions in the original equation, only x=348.677 is an intercept
RELATED QUESTIONS
I am not sure which Algebra section this question fits under. Hopefully someone can help... (answered by jim_thompson5910)
Hi,
Can someone help me please? I am completely lost.
8x+x(x-2)=0
I need the... (answered by alicealc,nerdybill)
Can someone please help me with the below problem. I am totally lost....thank you.... (answered by edjones,praseenakos@yahoo.com)
can someone help please.
Given f(x)=5x-3 and g(x)=x^2,
find g((f(2)).
A. 7? B. 17?... (answered by solver91311,macston)
I am having trouble. Can someone please help?
f(x)=4x-3
f(-1)
Thank... (answered by ankor@dixie-net.com)
Help me please, I need to find all intercepts of the function.... (answered by MathLover1)
you provide great, can someone help me with these problems
Find all x intercepts of... (answered by stanbon)
Find the domain of the composite function fog. f(x)=x²+8;g(x)=√x-1... (answered by ewatrrr)
Hi! can someone please help me with this question?
Given the function f(x)=-2c+cx-x^2... (answered by Fombitz)