How do you solve #-x^2+x+5>0# by graphing?
1 Answer
Nov 21, 2016
-1.791 < x < 2.791
graph{-x^2+x +5 [-10, 10, -5, 5]}
Explanation:
Find the points of intersection of the graph with the x-axis.
using
The point of intersection of the graph with y-axis
is
Since the coefficient of
For
Hence, -1.791 < x < 2.791