Question

Simplify (3a^4-2a^2+5a-10)-(2a^4+4a^2+5a-2

Answer 1

3a4-2a2+5a-10)-(2a4+4a2+5a-2) 
remove first set of parentheses:
 
apply "-" sign to second parentheses (distributive prop):
 
the - of a - becomes a + :
 
combine like terms:
 

Factor out the variables that are alike:

{(1)a^4 + (-6)a^2 + 0a + (-8)}}} 
0a is just 0, makea the "a" term go away:
 
can try to factor as squares, but it doesn't work out:
8 = (-4) x (+2) product factors cannot add to make 6.