How do you solve x^2 - 10x + 21= 0 graphically?
2 Answers
Jun 12, 2017
The graph is given below
Explanation:
Here it is graph{(x^2)-(10x)+21 [-3.705, 16.295, -5.055, 4.945]}
Note that at
Jun 12, 2017
Explanation:
"from the graph of " x^2-10x+21
graph{x^2-10x+21 [-10, 10, -5, 5]}
"the solution to "
x^2-10x+21=0" are the values of x where the"
"graph crosses the x-axis"
rArrx=3" or " x=7
color(blue)"As a check"
"Substitute these values into " x^2-10x+21
x=3to9-30+21=0larrcolor(red)" True"
x=7to49-70+21=0larrcolor(red)"True"