Question

Calculati: a) a*b-a*c+a*d stiind ca a=10 si b-c+d= 100 b) a*b-a*c-a*d stiind ca a=7 si b-c-d=13

Answer 1

a) a = 10  si b - c + d = 100
a * b - a * c  + a * d = a(b - c + d) = 10 * 100 = 1 000
b) a = 7  si b - c - d = 13
a * b - a * c - a * d = a(b - c - d) = 7 * 13 = 91