A polynomial in the form a 3 + b 3 is called a sum of cubes. A polynomial in the form a 3 – b 3 is called a difference of cubes.

The difference of two cubes is equal to the difference of their cube roots times a trinomial, which contains the squares of the cube roots and the opposite of the product of the cube roots.

The sum or difference of two cubes can be factored into a product of a binomial times a trinomial. That is, x3+y3=(x+y)(x2−xy+y2) and x3−y3=(x−y)(x2+xy+y2) .

Sum or Difference of Cubes A polynomial in the form a 3 + b 3 is called a sum of cubes. A polynomial in the form a 3 – b 3 is called a difference of cubes.

The distinction between the two formulas is in the location of that one “minus” sign: For the difference of cubes, the “minus” sign goes in the linear factor, a – b; for the sum of cubes, the “minus” sign goes in the quadratic factor, a2 – ab + b2.

1.25992
The value of the cube root of 2 is 1.25992.

The Dept. of Motor Vehicles (DMV) proof of residency letter is an affidavit that is made by a third (3rd) party to claim an individual is a resident of the State. Most States require that an applicant for a drivers license or voter registration provide at least two (2) “proofs of residency” in addition to the affidavit.

Difference of Two Cubes. The Difference of Two Cubes is a special case of multiplying polynomials : (a−b)(a 2+ab+b 2) = a 3 − b 3. It comes up sometimes when solving things, so is worth remembering.

The Difference of Two Cubes is a special case of multiplying polynomials : (a−b) (a 2 +ab+b 2) = a 3 − b 3. It comes up sometimes when solving things, so is worth remembering.

Personal mail that is not a utility bill or from a government agency is unlikely to be accepted as proof residency. You should always remember to check with your local requirements as some of these documents are accepted in some states.