4a^2 8a 1 4a^2-8a+1 (2a-1)^2 2a-1
a)= __________ - ________ +______ = _________ =___________ =______
4a^2-1 4a^2-1 4a^2-1 4a^2-1 (2a-1)(2a+1) 2a+1
16b^2 8b 5 16b^2-8b+5
б)=________ - _______ + ________= __________
16b^2-1 16b^2-1 16b^2-1
16b^2-1
9с^2 12c 3 9c^2-12c+3
в)=_______ - ________ + ______= __________
9c^2-4
9c^2-4 9c^2-4
9c^2-4
a^2+b^2 5ab^2 - b
5ab^2 +b a^2+b^2-5ab^2+b-5ab^2-b
г)= _______ - ________ - __________ =_______________________ =
(a-b)^2
(a-b)^2
(a-b)^2
(a-b)^2
a^2-10ab^2+b^2
=______________
(a-b)^2
1в)
2а )
3б)
............................
3×5X-12-8X=4X+9
15X-8X-12=4X+9
7X-12=4X+9
7X=4X+21
3X=21
X=7
2
1 40/81
4
8
2
3 5/16
4
-1125