Question

1. What are the solutions of the equation x2 – 9 = 0? Use a graph of the related function. (1 point)


There are two solutions: –3 and 3.


There are two solutions: .


There are no real number solutions.


There are two solutions: –3 and 3.

Answer 1

this is in a form of

difference of squares

Answer 2

what does that mean

Answer 3

difference of squares
(a - b) ( a +b )= a ^2 - b ^2

Answer 4

you can factor it out

Answer 5

they are squares of each other