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

3b(a-b)=3ab - 3b²

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

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

7m(m-n-p)=7m² - 7mn - 7mp

-0.3c( -5a -3c -2d)=1.5ac+0.9c²+0.6cd

5/12 * (-4x -6y -3)= - 5/3 x - 5/2 y - 5/4= - 1 2/3 x - 2 1/2 y - 1 1/4