Проведите пальцем по роликам, чтобы удалить их
3b + 8c + 3 =0 или 3b + 8c = -3
Ответ в файле.......................................
<span>1)m²(m²-1)=m²(m-1)(m+1)
2)2x²y²(2x-3y)
3)3m²(1+3m)
4)5x³(x²-3)
5)9b³(2a-b)
6)x³+x²y+x²y+xy²-xy²-y³=x³+2x²y-y³
7)a³-4a²-2a²+8a+3a-12=a³-6a²+11a-12
8)3y³-3y²+3y-4y²+4y-4=3y³-7y²=7y-4
9)4a³-4a²+a²-a+3a-3=4a³-3a²+2a-3
10)32y-16y²+16y²-40y+25=0
-8y=-25
y=25/8= 3 1/8
11)-(4a+3b)²
12)-(0,4d+5c)²
13)9x^4-1 ^-степень
14)1,44c^4-49a^4
15)y^10-25/64x²
16)(x²-3)(x²+3)
17)(x³-a²)(x³+a2)
18)(9-b²)(9+b²)=(3-b)(3+b)(9+b²)
19)(c^4-d^4)(c^4+d^4)=(c²-d²)(c²+d²)(c^4+D^4)=(c-d)(c+d)(c²+d²)(c^4+d^4)
20)(a²-4)(a²+4)=(a-2)(a+2)(a²+4)
21)(xy-0,5)(xy+0,5)</span>
X1 = -1; x2 = 3.
c =x1 * x2 = - 1 * 3 = - 3;
- b = x1 + x2 = - 1 + 3 = 2; b = - 2
x^2 + b*x + c = 0;
x^2 - 2 x - 3 = 0.
2) x1 = - 4;
x2 = 0;
c = x1 * x2 = - 4 * 0 = 0;
- b = x1 + x2 = - 4 + 0 = - 4; b = 4
x^2 + b* x + c = 0;
x^2 + 4x = 0