Try and answer these multiple questions again and I will try to give you brainiest. Good Luck!

9: c  , 10: a ,11 :d  12: a

Step-by-step explanation:

1     3    

step-by-step explanation:

hopefully im right

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!