Hi guys, I need help with my work, I am attaching a screenshot for you, if you could explain to me how, what the answer is, and how you got to it .... that would be VERY appreciated.

Question

Hi guys, I need help with my work,  I am attaching a screenshot for you, if you could explain to me how, what the answer is, and how you got to it .... that would be VERY appreciated.

ninjaslice · Answer

attachment

ninjaslice · Answer

WIll medal if someone can help me .

jim_thompson5910 · Answer

x^2-6x-9 does NOT factor to (x-3)^2

it should be

x^2-6x+9 = (x-3)^2

jim_thompson5910 · Answer

I suggest FOILing out (x-3)*(x-3) or using the box method to confirm that it does equal x^2-6x+9

mathmale · Answer

Try re-ordering the terms in the second line of this "solution," to reflect what Jim has just said.  You are "completing the square."

ninjaslice · Answer

Ok, and one more question, its my last one. If you could Verify my answer

jim_thompson5910 · Answer

The part above where you circled is cut off

mathmale · Answer

First of all, make certain you understand what a "zero" is in this context:  It's an x-value at which the function equals zero, that is, y=0.

So, if you wish to find the zeros of this function, set the function= to zero and solve for x.  Please show your work here.

mathmale · Answer

You could use "completing the square" again, or you could use the quadratic formula.

ninjaslice · Answer

Thank you. If i have any further questions ABOUT those 2 i will let you know.

mathmale · Answer

I should have mentioned this earlier, but factoring the given expression might prove to be the easiest approach of all.  Good luck; hope to work with you again.