It is 391 because 1+0=1, 9+0=9, and 1+2=3
Answer:
opposite side of an angle
hypotenuse
First your going to use commutative property to reorder the terms , so it would be
5x^4-x-35x^3+7 , then your going to factor out x & -7 from the equation once you factor that out you should have x(5x^3-1)-7(5x^3-1) after you got that your going to factor out 5x^3-2 and get the answer (x-7)(5x^3-1) which is your final answer.
This might help explain how to do a very similar problem.... http://www.mathopenref.com/constbisectline.html
