SOLUTION: the inequality x^2 -20x <21 is equivalent to

Algebra ->  Inequalities -> SOLUTION: the inequality x^2 -20x <21 is equivalent to      Log On


   

Question 468962: the inequality x^2 -20x <21 is equivalent to
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
the inequality x^2 -20x <21 is equivalent to
---
x^2-20x-21 < 0
---
(x-21)(x+1) < 0
---
graph%28400%2C400%2C-10%2C30%2C-130%2C50%2Cx%5E2-20x-21%29
-----
-1< x < 21
===================
Cheers,
Stan H.