Răspuns:
a) 124×32+124×68=
=3968+8432=12400
b)401×59+401×78-401×37
=23659+31278-14837=
=40100
c)108²-108×58=
=11664-6264
=5400
d)7,9²+7,9×5,8-7,9×3,7=
=62,41+45,82-29,23=
=79
e)199²-198×199+199=
=39601- 39402+199=
=199+199=
=398
Sper sa iti fie de ajutor!!