Question

Раскройте скобки 1) 2(x-7y+3z) 2) - 7(5 - а - 4b)3) - (c-8d+6d)•(1-2)4) -p(-x+2y-4,6)5)-0,6x(-5+3m-1,4n)​

Answer 1

Ответ:

1)=2c-14y+6x

2)=-35+7a+28b

3)=-c+8d-6d•-1=c-8d+6d

4)=px-2yp+4,6p

5)=3xc-1,8xm+6,4xn

Answer 2

1. 2(x - 7y + 3z) = 2x - 14y + 6z

2. -7(5 - a - 4b) = -35 + 7a + 28b

3. -(c - 8d + 6d) • (1 - 2) = -(c - 2d) • (-1) = c - 2d

4. -p(-x + 2y - 4.6) = px - 2py + 4.6p

5. -0.6x(-5 + 3m - 1.4n) = 0.6x(5 - 3m + 1.4n) = 3x - 1.8mx + 0.84nx