What basic algebraic technique is used to derive the quadratic​ formula? graphing

finding the greatest common factor

writing the prime factorization of a number

completing the square

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?