По теореме Виета:
x1 + x2 = -p/k
x1*x2 = 3/k
1 - 3 = -p/k
1*(-3) = 3/k
k = 3 : (-3) = -1
-2 = -p/k
k = -1
p = 2*k = 2*(-1) = -2
ответ: k= -1; p = -2.
1) <span>√2х² + 4√3х - 2√2=0
D = (4</span>√3)^2 - 4*√2*2√2= 48 - 32 = 16 D>0
Х1 = -4√3 + √16/2√2 = -2√3 + 4/√2
Х2 = -4√3 - √16/2√2 = 2√3 - 4/√2
5х+2(х+1)=16 5х+2х+2=16 7х=14 х=2 у=2+1=3 ответ: х=2, у =3
Всего случаев: 36
Благоприятных случаев: ?
1*1 = 1 (<10)
1*2 = 2 (<10)
1*3 = 3 (<10)
1*4 = 4 (<10)
1*5 = 5 (<10)
1*6 = 6 (<10)
2*1 = 2 (<10)
2*2 = 4 (<10)
2*3 = 6 (<10)
2*4 = 8 (<10)
2*5 = 10 (=10)
<span>
2*6 = 12 (>10)</span>3*1 = 3 (<10)
3*2 = 6 (<10)
3*3 = 9 (<10)
3*4 = 12 (>10)3*5 = 15 (>10)<span>
3*6 = 18 (>10)
</span>
4*1 = 4 (<10)
4*2 = 8 (<10)
4*3 = 12 (>10)4*4 = 16 (>10)4*5 = 20 (>10)4*6 = 24 (>10)
5*1 = 5 (<10)
5*2 = 10 (=10)
5*3 = 15 (>10)
5*4 = 20 (>10)
5*5 = 25 (>10)
5*6 = 30 (>10)
6*1 = 6 (<10)
6*2 = 12 (>10)
6*3 = 18 (>10)
6*4 = 24 (>10)
6*5 = 30 (>10)
6*6 = 36 (>10)
Благоприятных случаев: 1 + 3 + 4 + 4 + 5 = 17
P =
Удачи!