Jawabanmu

2014-03-19T14:00:15+07:00
P(x)+Q(x)=R(x)
P(x)= x^4+(a+b)x^3-2x^3+x-1
Q(x)= 2bx^3+2x^3+(a-3b)
R(x)= x^4+7x^3+x-6
p(x)=x^21x12x-3nmx