Question

PLEASE someone help me, and explain it to me:

Use graphing technology to find one of the approximate solutions of 0 = x2 + 10x + 3. Round to the nearest hundredth.
Answer
x ≈ –9.69
x ≈ –0.68
x ≈ 0.31
x ≈ 7.32

Answer 1

The question on may be prompting you to use a graphing calculator but this site also has the ability to find intersections and root, which are where your function takes on a value of ero.
http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiJ4XjIrMTB4KzMiLCJjb2xvciI6IiMwMDAwMDAifSx7InR5cGUiOjEwMDAsIndpbmRvdyI6WyItMTYuNjQiLCIxNi42NCIsIi0xMC4yNCIsIjEwLjI0Il19XQ--

Answer 2

I am still very confused...

Answer 3

describe what you're confused about.
normally you have an equations of the form:\[y = x^2 +10x+3\]

but when your given what the result is, ie:
\[0 = x^2 +10x +3\]
what you are finding are the point which have a value of:
\[y=0\]
or where the function crosses the x axis. if you are able to see aplot of the funciton you just have to identidfy these points.

Answer 4

But it is asking for a solution. Is what you are giving me that?

Answer 5

Solution in this case means x-values. The question could read:
What are the x-Values that will give you y-values of zero.

Answer 6

What x-values, when plugged into the equation, will give you a y value of zero

Answer 7

Ok, so since I need to find the x vaule... how do I do that?