Answer:
x=1+2i/2
Step-by-step explanation:
Using the method of completing the square
(2x)²-2(2x)1 +(1)²+4=0
(2x-1)²=-4
taking square root on both sides
2x-1=2i
2x=1+2i
x=1+2i/2
Step-by-step explanation:
average rate of change of function is given by :

where

and a= 7
so inserting values is formula for h=1


now for h= 0.1


similarly average rate of change of given function is same for all given step sizes.