SOLUTION: Trying to solve this equation:
(X+2)(12/x -1)=12
Have tried many options without success.
Thanks
Algebra.Com
Question 118777: Trying to solve this equation:
(X+2)(12/x -1)=12
Have tried many options without success.
Thanks
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation
Foil
Simplify
Multiply both sides by the LCD x to eliminate every fraction.
Distribute and multiply
Subtract 12x from both sides
Combine like terms
Let's use the quadratic formula to solve for x:
Starting with the general quadratic
the general solution using the quadratic equation is:
So lets solve ( notice , , and )
Plug in a=-1, b=-2, and c=24
Negate -2 to get 2
Square -2 to get 4 (note: remember when you square -2, you must square the negative as well. This is because .)
Multiply to get
Combine like terms in the radicand (everything under the square root)
Simplify the square root (note: If you need help with simplifying the square root, check out this solver)
Multiply 2 and -1 to get -2
So now the expression breaks down into two parts
or
Lets look at the first part:
Add the terms in the numerator
Divide
So one answer is
Now lets look at the second part:
Subtract the terms in the numerator
Divide
So another answer is
So our solutions are:
or
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