Question

Aflati, folosind factorul comun.
(5+17)*(31+27)+(5+17)*(19+23)

Answer 1

(5+17)*(31+27+19+23)=22*100=2200

Answer 2

$(5+17)*(31+27)+(5+17)*(19+23)= \\ (5+17)*(31+27+19+23)= \\ 22*100= \\ 2200$