Question

Solve the inequality. Write your answer in interval notation. Graph.
x^2 - 9 / x^2 - 12x + 11 is greater than or equal to zero.

Answer 1

[(x-3)(x+3)]/[(x-11)(x-1)] >=0
\[(-\infty ,-3]\cup(1,3]\cup(11,+\infty) \]

Answer 2

wow, thank you.

Answer 3

interval notation is hard for me

Answer 4

so on the graph, is the point (0,-3) supposed to point upward?

Answer 5

it is a solid dot

Answer 6

is it (3,0) solid dot. (-3,0) solid dot, (1,0) open dot, and (11,0) open dot?

Answer 7

yes ( ) means open dot and [ ] means closed dot
however infinity ( or ) means arrow

Answer 8

ok. thank you very much