Question

Al jabar

a.8p-3+(-3p)+8
b.9m+4mn+(-12m)-7mn
c.2a2+3 ab-7-5a2+2ab-4

Answer 1

A. 8p -3 +(-3p) +8
     = 8p +(-3p) -3 +8
     = 5p +5
b. 9m +4mn +(-12m) -7mn
   = 9m +(-12m) +4mn -7mn
   = -3m -3mn
c. 2a² +3ab -7 -5a² +2ab -4
   = 2a² -5a² +3ab +2ab -7 -4
   = -3a² +5ab -11

Itu jawabannya.