Abivalemid
3. 2a ( x +y) x y = 2a ( x +y) (x + y ) = ( x + y)(2a -1)
4. x4 n x3 n = x3 n ( x n -1)
5. 25 c2 = (5 c)(5 + c)
6. (v + b)2 n 2 = ((v + b) +n)((v + b) n )= ( v +b + n)(v + b n )
7. m 2 +6m + 9 = (m + 3)2
8. 9a 2 6a + 1 = (3a -1)2
9. 27s 3 8d 3 = (3s 2d)(9s 2 + 6 s d + 4d 2)
10. 64 + f 3 = (4 + f )(16 4f + f 2)
b
· Kaksliikmes a + b tuua sulgude ette a: a + b = a( 1 + ).
a
· Taandada murd:
a -b a -b
1. = = -1
b - a - ( a - b)
a 3 - 2a 2 a 2 ( a - 2) a2
2. = =
a2 - 4 ( a - 2)(a + 2) a + 2
a2 - b2
=
( a + b ) ( a - b) = a - b
3. 2
a + 2ab + b 2
annaabi.ee 
