Subtract and simplify: (3x2 - 6x + 7) - (x2 - 6x + 4)

1. 2x power of 2 + 6x + 3

2. 4x power of 2 6x + 3

3. 2x power 2 + 6x + 11

4. 2x power if 2 + 3

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies