I'm not sure if i am correct but i would say
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Answer: It will take Susan 420 minutes to read 210 pages of her novel.
The answer would be x^4 -16
Explanation: use the FOIL method.
(x^2 +4)(x^2 -4)= x^4 +4x -4x -16. 4x and -4x cancel each other out. You are left with x^4 -16.
F- irst
O- uter
I- nner
L- ast
Answer:
In triangle DEF:
Given:
,
and 
To list the sides of a triangle in order from shortest to longest.
In the Figure as shown below :
If one of the angle of a triangle is larger than, then the sides opposite the larger angle is longer than the side opposite to the shorter


Therefore, the list of the sides of a triangle DEF in order from shortest to longest is, 