Question

both (x + 2) and (2x + 1) are the factors of
axsquare + 2x+b, then the value of a-b​

Answer 1

Answer:

a-b= 0

Step-by-step explanation:

if (x+2) and (2x+1) are factor of ax^2+2x+b then

p(x)=0

put x=-2

then eq 1 .: 4a+b=4

eq.2 : a+4b=4

now subtract eq.2 from eq.1

which gives 3a-3b=0

so a-b=0