- Учителю
- Тренажер 'формулы сокращенного умножения'
Тренажер 'формулы сокращенного умножения'
(x + y)2 | (b + 3)2 | (a + 12)2 | (y - 9)2 |
4x2+12x + 9 | 25b2 +10b + 1 | a2 + 12ab + 36 | 1 + y2 -2y |
(x + y)(x - y) | (2a - 3b)(2a + 3b) | (8b + 5a)(5a - 8b) | (10x - 7y)(10x + 7y) |
x2 - y2 | b2 - | a2 - 25 | y2 - 0.09 |
x3 - y3 | 1 + b3 | 125 + a3 | y3 - 1 |
(p - q)2 | (10 - c)2 | (15 - x)2 | (40 + b)2 |
25a2 +10a + 1 | 81a2 - 18 ab + b2 | 9a2 - ab + b2 | 64 - 16b + b2 |
(4 + y2)(y2 - 4) | (5x2 + 2y3) (5x2 - 2y3) | (p - 7)(p + 7) | (7x - 2)(2 + 7x) |
25x2 - y2 | -49a2 + 16b2 | 144b2 - c2 | p2 -a2b2 |
(- a - 2)2 | (- 3 - b)2 | (-x - y)2 | (-12 - c)2 |
m2 - n2 | 125 - a3 | 1 + b3 | x3 + y3 |
(9 - y )2 | (0.3 - m)3 | (m + n)2 | (8 - a)2 |
b2 +4a2 - 4ab | 8ab + b2 + 16a2 | b2 + 9a2 - 6ab | 9x2 - 24xy + 16y2 |
( 9a - b2 )(b2 + 9a ) | (4 + y2)( y2- 4) | (7 + 3y)(3y - 7) | (8c + 9d)(9d - 8c) |
8 - a3 | 1 + 27y3 | x3 - 64 | m3 + 1000 |
( b + 3 )2 | (y + 9)2 | (m - 0.3)2 | (a - 25)2 |
1 + x2 - 2x | 9x2 - xy +y2 | 64 - 16a + a2 | m2 + 2mn + n2 |
(2x + 1)(2x - 1) | (8c + 9d)(9d - 8c) | (8b + 5a)(8b - 5a) | (c + d)(c - d) |
125a3 - 64b3 | c3 - d3 | 27 - y3 | 1 - c2 |
(r + 0,5)2 | (40 + b)2 | (0.2 - x)2 | (x - 2y)2 |
28xy + 49x2 + 4y2 | 100x2 + y2 + 20xy | a2 + 4b2 - 2ab | 1 - 2z + z2 |
(7x - 2)(7x + 2) | (c - 7)(7 + c) | (4 + r)(r - 4) | (a - b)(b + a) |
1 - p3 | a3 - b3 | c3 + 27d3 | x3 - y3 |
(- a - 1)2 | (- b - 2)2 | (- c - 10)2 | (-x - 12)2 |
(a + 1)2 | (a + 2)2 | (1 + a)2 | (2 + b)2 |
(2 - a)3 | (b - 1)3 | (c - 2)3 | (1 - d)3 |