+129907 11.
x^2 +7x + 10 x^2 - 3x - 18
___________ * _____________
x + 3 x^2 + x - 2
( x + 5) ( x + 2) * (x -6) ( x + 3) ( x + 5) ( x - 6)
_________________________ = ____________ x cannot be -3, -2 or 1
(x + 3) (x + 2) ( x - 1) ( x - 1)
12.
2x x + 7
___ - _____
x - 7 x
(2x * x) - (x + 7) (x - 7) 2x^2 - ( x ^2- 49) x^2 + 49
____________________ = ______________ = _________
x ( x - 7) x ( x - 7) x ( x - 7 )
13.
n^2 + 3n + 2 2n
___________ - ______
n^2 + 5n + 6 n + 3
(n + 2) ( n + 1) 2n
____________ - ____
( n + 3) ( n + 2) n + 3
( n + 1) 2n
_______ - ______
( n + 3) (n + 3)
( n + 1 - 2n )
___________
n + 3
1 - n
_____
n + 3
