using the TI-84, how do u solve an inequality?
Favorite Answer
factor the equation using the FOIL method.
(x-3) (x+2) > 0
This works because using the distributive property of multiplication this can be multiplied back out to = x^2-x-6
Next, set each individual set = to zero and solve for x:
(x-3) = 0 (x+2) = 0
+3 +3 -2 -2
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x=3 OR x= -2
Well since we know that the equation is greater than 0 in the original equation we can plug in the numbers to make sure they work.
After plugging in the numbers back in to your equation you will find that the only one that is true is 3 and therefore the answer to the inequality is x=3
Hope this helps
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