For the third one, on the left side do 3-51.29 and keep doing it like that and you should get all the answers you need :)

Constant is the number that cannot change the value
Im not sure..but you can copy it
Answer:

Step-by-step explanation:
<em>If you just want to simplify -27/x^15, it is not very difficult. Here is the simple way.</em>
<em />
Given the expression

solving



Therefore,

Answer:
(4X-3)(3X^2-1)
Step-by-step explanation:
12X^3-9X^2-4X+3=
3X^2*(4X-3)-(4X-3)=
(4X-3)(3X^2-1)