Question

раскройте скобки - 1) с* ( 8-11d) 2) ( n*m) *15p 3) 3*(2p+k+5t)

Answer 1

1) с* ( 8-11d) = 8c - 11dc  2) ( n*m) *15p = 15pnm 3) 3*(2p+k+5t) = 6p + 3k + 15t