SOLUTION: x^2+3x>10 leave solution in inequality notation

Algebra ->  Inequalities -> SOLUTION: x^2+3x>10 leave solution in inequality notation      Log On


   

Question 848758: x^2+3x>10 leave solution in inequality notation
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+3x>10
x^2+3x-10> 0
(x+5)(x-2) > 0

testing intervals...
x < -5
(-)(-) => (+) true
-5 < x< 2
(+)(-) => (-) false
x>2
(+)(+) => (+) true
solution:
(-oo,-5) U (2,oo)