Answer:
es ocho es facil cuenta si esque estoy bien
Step-by-step explanation:
Answer:
C. 
Step-by-step explanation:
Given

Required
Find the expression where x - 2

Substitute 2 for x

From law of indices which states

So, the expression becomes

Expand the denominator


Hence,
is
when x = 2
(2x^4 - 6x^2+8) + (-x^4+ 2x^2-12)
=2x^4-6x^2-x^4+2x^2-12
=x^4-4x^2-12
Just watch your signs when opening up the brackets and then collect like terms.
Answer:
D. 12m^3n^5
Step-by-step explanation: