SOLUTION: Solve. 7x + x(x-3) = 0 Find the x-intercepts of f(x)= 7x + x(x-3) a. What are the solutions? b. What are the x-intercepts? Please help, I keep getting confused and

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Solve. 7x + x(x-3) = 0 Find the x-intercepts of f(x)= 7x + x(x-3) a. What are the solutions? b. What are the x-intercepts? Please help, I keep getting confused and      Log On


   

Question 132282: Solve.
7x + x(x-3) = 0
Find the x-intercepts of f(x)= 7x + x(x-3)
a. What are the solutions?
b. What are the x-intercepts?
Please help, I keep getting confused and told I do not have the correct answer.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Maybe you understand it, but you're not giving
exactly the answer requested
You are asked to solve this. That means to find the value
or values of x that make it true
7x+%2B+x%28x-3%29+=+0
7x+%2B+x%5E2+-+3x+=+0
x%5E2+%2B+4x+=+0
x%2A%28x+%2B+4%29+=+0
There are 2 ways this can be true
0%2A%280+%2B+4%29+=+0, making x+=+0
and
-4%2A%28-4+%2B+4%29, making x+=+-4
So the solution(s) are x+=+0 and x+=+-4
----------------------------------------------------
Find the x-intercepts of f(x)= 7x + x(x-3)
This is just asking the same question over again
in a different way. It's asking "What values of
x will make f%28x%29+=+0? The answer
is x+=+0 and x+=+-4