SOLUTION: 18d^2+36d+10=0
The answer is - 1/5 , - 1/3 I just don't know how to get there
Algebra.Com
Question 326091: 18d^2+36d+10=0
The answer is - 1/5 , - 1/3 I just don't know how to get there
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
So if 
is a root, then:
^2\ +\ 36\left(\frac{-1}{3}\right) +\ 10\ =\ 0\ \Rightarrow\ 2\ -\ 12\ +\ 10\ =\ 0)
Which is true. So far, so good, plus a good side-effect is that we know that one of the factors of the trinomial is 
if 
is a root, then:
^2\ +\ 36\left(\frac{-1}{5}\right) +\ 10\ =\ 0\ \Rightarrow\ \frac{18}{25}\ -\ \frac{36}{5}\ +\ 10\ =\ 3.52 \neq\ 0)
Oops! Warning! Danger, Will Robinson. is NOT a root of:
Let's go back and factor. First take out a 2:
Since we know that is a factor, the other factor has to be 
. Verify using FOIL (left as an exercise for the student.)
Since the other factor is , the second root must be 
Check:
^2\ +\ 36\left(\frac{-5}{3}\right) +\ 10\ =\ 0\ \Rightarrow\ 50\ -\ 60\ +\ 10\ =\ 0)
Answer checks. Who told you the answers? Go get your money back.
John
RELATED QUESTIONS
6, 3 3/4, 2 1/4, 1 1/4, 3/4, 3/4, _____
answer key shows that the answer is 0, but I... (answered by greenestamps)
{{{((15/x)-5)/(x-3)}}}, simplify with rationalizing and substitute in 3 for x. The answer (answered by josgarithmetic,MathTherapy)
(x+5)/2+(2x-1)/5=5
I know the answer I just don't know how to get to... (answered by algebrahouse.com)
how would i solve this equation.|4-3x|=|2-3x| . i know the answer is 1. i just dont know... (answered by josgarithmetic)
OK , here is the problem, solve for x.
x^(1+ln x)= 7,39
Doesn´t look that complicated... (answered by longjonsilver)
I am taking a HELP test on saturday and having some problems. I know what the answer... (answered by elima)
Correct and explain why this is wrong 0/(-5) = -5 I know the correct answer is 0 but... (answered by MathLover1)
-3y + 1/2 = 5/7
This is what I have done
-3y + 1/2 = 5/7 = 10/14 The 1/2's cancel... (answered by ewatrrr)
Just not getting this.
Suppose cos t = -0.4 and csc t < 0 . Find each of the following (answered by lwsshak3)