1) 15b + 3
15 + 3 = 18
2) 9 +5x + 4
D = 25 - 144 = -119 D<0, 0 уравнений
решений нет
3) 2an - 5bm - 10bn +am
(2an - 10bn) + (-5bm + am)
2n(a - 5b) + m(-5b + a)
2n(a - 5b) + m(a - 5b)
2n + m
4) + 6x + 9
D = 36 - 36 = 0 D=0, 1 уравнение
= = 3
5) 4 + 25 = (2a + 5b)(2a + 5b)
6) 49 - 25 = (7 - 5n)(7 + 5n)
7) 3 + 3ab - 7a - 7b
3a(a + b) - 7(a + b)
3a - 7
8) 2y(x - 5) + x(x - 5)
2yx - 10y + - 5x
2y(x - 5) + x(x - 5)
2y + x
КИВИ: 8-951-767-02-91
1) 15b + 3
15 + 3 = 18
2) 9 +5x + 4
D = 25 - 144 = -119 D<0, 0 уравнений
решений нет
3) 2an - 5bm - 10bn +am
(2an - 10bn) + (-5bm + am)
2n(a - 5b) + m(-5b + a)
2n(a - 5b) + m(a - 5b)
2n + m
4) + 6x + 9
D = 36 - 36 = 0 D=0, 1 уравнение
= = 3
5) 4 + 25 = (2a + 5b)(2a + 5b)
6) 49 - 25 = (7 - 5n)(7 + 5n)
7) 3 + 3ab - 7a - 7b
3a(a + b) - 7(a + b)
3a - 7
8) 2y(x - 5) + x(x - 5)
2yx - 10y + - 5x
2y(x - 5) + x(x - 5)
2y + x
КИВИ: 8-951-767-02-91