Multiply each term by the common denominator which is x(x+5)
OpenStudy (anonymous):
I did and when I finish out the solution I get \[2x^2+7x+35-4x(x+5)=50\]
Then working through that get
\[-2x-13x-15=0\]
using the big X I get
\[(-2x-5)(x+3)\]
OpenStudy (mertsj):
\[2x^2+7(x+5)-4(x^2+5x)=50\]
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OpenStudy (mertsj):
\[2x^2+7x+35-4x^2-20x=50\]
OpenStudy (mertsj):
\[-2x^2-13x-15=0\]
OpenStudy (anonymous):
Which is what I received above so am I getting something wrong with X
OpenStudy (mertsj):
\[2x^2+13x+15=0\]
\[(2x+3)(x+5)=0\]
OpenStudy (mertsj):
\[x=- \frac{3}{2}, -5\]
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OpenStudy (anonymous):
how did
-2x^2-13x-15=0
become all positive?
OpenStudy (mertsj):
Multiply both sides by -1 and see what you get.
OpenStudy (anonymous):
mmm, ok I am still receiving the wrong answer for x though
OpenStudy (mertsj):
You have to discard the answer x = -5 because the denominator cannot be 0
OpenStudy (anonymous):
mmm ok so for restrictions there would be none then
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OpenStudy (mertsj):
Any number that causes the denominator to be 0 is excluded. So x cannot be 0 and x cannot be -5. Those are the restrictions.