Verified Answer :

we have to find which consective integer the real zero is present so for this we will assume
x=0:
f(0)= 30-100+220-4 = -4
now

 for: x=1: 
f(1)=31-101+221-4=3-10+22-4=11
now it means that the real zero lies between 0 and 1

Related Questions