Carrotsticks
Retired
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- Jun 29, 2009
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guys, how do u solve this inequality:
x^2 + 2x + 3 > 0
Because when you complete the square, you getthat is it. but i dont understand why the answer is true for all x.
But notice, that's always positive isn't it??? Go ahead, try it. Try substituting a number that DOESN'T make it > 0.
There exists no such number, so that's why it's > 0 for all real x.