Vul de gaten in. Druk dan op "Antwoord controleren" om uw antwoorden te controleren.
a = -5 ; b = 2 ; c = -3 ; d = 2,4ab + cd = (a + b).(c - d) = a (b + c) + 9d = -cb4 : (-a + c)= (a + c) : b - ad = [2a(b + d) - 4] : c = =