a^2 - b^2
vytýkání
(a+b)2 / (a-b)2
roznásobení závorky
100

(a - b) . (a + b) =

a2-b2

100

mx - m =

m. (x - 1) 

100

(a + b)2

a2+2ab+b2

100

2u. u = 

2u2

200

(3d - d) . (3d + d)

 9d 2-d2

200

3x - 9y = 

3. (x - 3y)

200

(3 - b)2

9- 6b+b2

200

x ( y + x) =

xy + x2

300

(a2 - 2c) . (a2 + 2c) 

a4-4c2

300
2mn - m2 + m = 

m (2n - m + 1)

300

(-3x - 2)2

9x 2+12x+4

300

- 2y (y - 3)

-2y2 + 6y

400

1/25-b2

(1/5 - b) . (1/5 + b)

400

120xyz - 60xy - 20xy

20xy (6z - 3 - 1) 

400

(xy- xy)2

x 2y2+2x 2y2+x 2y2

400

- 3y (m - n + y2)

- 3ym + 3yn -3y3

500

a6-b8

(a3 - b4) . (a3 + b4)

500

1/2 m - n = 

1/2 (m - 2n)

500

(-0,5a + b)2

0,25a2- ab+b2

500

(x+y) . (x + 3) =

x2 + 3x + yx + 3y