Question

1) scoateti factorul comun : 5a+ax-ba+a=


2) daca a+b=18 si c=17 calculati cb+ac=

Answer 1

1).  5a + ax - ba + a =  a ( 5 + x - b + 1) = a( x - b + 6)

2).   a + b = 18
        cb + ac =  c( b + a) = c *18 = 17 * 18 = 306

Answer 2

5a+ax-ba+a=a(5+x-b+1)=a(6+x-b)=a(x-b+6)
a+b=18
c=17
cb+ac=c(a+b)=17*18=306