Question

Solve the equation by graphing: x^2 – 18x + 81 = 0.
A. {-2, 9}
B. {9/2, 3}
C. {9}
D. No solution

Answer 1

since you have options, why not just plug and play?

Answer 2

1 -18 81
0 -2
1 -20... -2 not a zero

Answer 3

If you have to graph, I would convert the equation into vertex form.

Answer 4

1 -18 81
0 9 -81
1 -9 .... 9 IS a zero

Answer 5

and; 18/2 = 9, ^2 = 81 so its a perfect square already

Answer 6

id go 9 :)

Answer 7

If you are asked to graph - then you need to know how to graph. Do you understand how to graph the equation?

Answer 8

ya the answer is 9 guys

Answer 9

Make a T-chart keep on going till you get a y value of 9. You will notice the trend of lowering y values.