Question

Раскройте скобки 3b(a-b);-5(0.8c-0.9d);-1/3(3x-4y);7m(m-n-p);-0.3c(-5a-3c-2d);5/12(-4x-6y-3)

Answer 1

3ab-3b^2

-4c+ 4.5d

-x+4/3 * y

7m^2-7mn-7mp

1,5ca + 0,9c^2+0,6d

-5/3*x - 5/2*y - 5/4

^2 -  в квадрате

Answer 2

3b(a-b) = 3ba - 3b^2

-5(0.8c-0.9d) = -4c + 4.5d

-1/3(3x-4y) = -x + 4/3y

7m(m-n-p) = 7m^2 - 7mn - 7mp

-0.3c(-5a-3c-2d) = 1.5ac + 0.9c^2 + 0.6cd

5/12(-4x-6y-3) = (-20/12)x + (-30/12)y + (-15/12) = (-5/3)x - (5/2)y - (5/4)