Answer: 4a2-20ab+12b2+4a+4
the 2 is squareing 4a and 12b
Step-by-step explanation:
expand move the parentheses
multiply the parentheses
collect like terms
Answer: 
Step-by-step explanation:
Given: The sales of 10000 increased by 65% each year .
Let x be the number of years.
The rate of growth=65%= 0.65
The exponential growth function is given by

, where A is initial amount and r is the rate of growth in decimal.
Then the increase in the sales id given by :-
