Ihave a test due !

which equation has the same solution as x^2 -6x -12 = 0?

(1) (x + 3)^2 = 21

(2) (x - 3)^2 = 21

(3) (x + 3)^2 = 3

(4) (x - 3)^2 = 3

you : d

Match each inequality to the number line that represents its solution

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.