ax(b+c+d)

axb+axc+axd

a x (b+c+d)=

(axb) + (axc) + (axd)

a x (b+c+d)=

(axb) + (axc) + (axd)

ax(b+g+d)

(ax+b)+(ax+g)+(ax+d)

ax(b+c+d)=

(a x b) + (a x c) + (a x d)