Mathematics
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OpenStudy (anonymous):
Can someone help me to solve the following inequality?
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OpenStudy (anonymous):
OpenStudy (anonymous):
Can you show the work, please?
OpenStudy (amistre64):
clear the fraction by multiplying both sides by the denom
OpenStudy (anonymous):
yeah
OpenStudy (amistre64):
then migrate it all to one side of the sign
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OpenStudy (amistre64):
and solve as a quadratic
OpenStudy (amistre64):
or, another way to look at it; is (x+1)/(x+1) = 1, so use that and ignore the denoms
OpenStudy (anonymous):
is this correct?
x^2 + 3x >= 0
OpenStudy (amistre64):
x^2 +4x + 1 >/ x+1
x^2 +3x >/ 0, looks good to me; factor and dbl chk
OpenStudy (anonymous):
then I should solve it as a normal inequality?
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OpenStudy (amistre64):
there should be someway to teach or get across to the masses that =,>, and < have all the same properties and are the same type of problems
OpenStudy (amistre64):
there is nothing magical about any of the symbols of equaltiy relations
OpenStudy (anonymous):
Im gonna edit the way I think, it is the correct. Then you can find the mistakes
OpenStudy (amistre64):
ok :)
OpenStudy (anonymous):
thanks ;)
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OpenStudy (anonymous):
this is the first part
OpenStudy (amistre64):
good so far :)
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
OpenStudy (amistre64):
those numbers are good for reference, but lets use them in a reasonable fashion now :)
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OpenStudy (amistre64):
|dw:1314273755356:dw|
OpenStudy (amistre64):
so our solutions is: (-inf,-3] U [0,inf)
OpenStudy (anonymous):
OpenStudy (radar):
Very Informative, thanks emunrradtvamg and amistre64
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OpenStudy (amistre64):
youre welcome :)
OpenStudy (anonymous):
Sorry my internet connection failed. So according to what we know the answer is the above mencioned, but according to my book the answer is:
OpenStudy (anonymous):
-3 <= x < -1 and x>=0
OpenStudy (anonymous):
there is where my question starts
OpenStudy (anonymous):
and this is where my yesterday question started
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OpenStudy (amistre64):
we have to address this as it relates to the original problem
OpenStudy (amistre64):
we did the factors which gave us the criticals and forgot to address the orignial statement
OpenStudy (amistre64):
\[\frac{x^2+4x+1}{x+1}\]this is what we need to address :)
OpenStudy (anonymous):
can you show the work please. Coz im getting utterly confused again
OpenStudy (amistre64):
do you see this
\[\frac{x^2+4x+1}{x+1}\ \ne\ x^2+3x\]
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OpenStudy (anonymous):
I just did that
OpenStudy (anonymous):
We have to pass the 1 to the left hand side first and then get the common denominator, right
OpenStudy (amistre64):
have to? no, it all works out the same
OpenStudy (anonymous):
so this is what we end up with
OpenStudy (anonymous):