Question

step by step explanation please​

Answer 1

Answer:

4

Step-by-step explanation:

zero polynomial means all its coefficiant of

the variable part will be zero that means

(a-2)x²+(b-a)c+(c+b)

here

a-2=0;b-a=0;c+b=0 according to the theory

so when a-2 =0 ==> a=2

similarly

b-a=0 ==>b=a=2

c+b=0 ===> c=(-b)

so a+b=2+2=4