Răspuns :
a)a=-2 =>-15·(-2)=30
b)a=-1 =>-15·(-1)=15
c)a=0 =>-15·0=0
d)a=7 =>-15·7=-105
b)a=-1 =>-15·(-1)=15
c)a=0 =>-15·0=0
d)a=7 =>-15·7=-105
a) a=-2
-15a=-15×(-2)=30
b) a= -1
-15a=-15×(-1)=15
c) a=0
-15a=-15×(0)=0
d) a=7
-15a=-15×7=-105
-15a=-15×(-2)=30
b) a= -1
-15a=-15×(-1)=15
c) a=0
-15a=-15×(0)=0
d) a=7
-15a=-15×7=-105