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Solution - Simplification or other simple results

5x302
5x^30-2

Step by Step Solution

Step  1  :

Equation at the end of step  1  :

  (5x29 • x) -  2

Step  2  :

Trying to factor as a Difference of Squares :

 2.1      Factoring:  5x30-2 

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =
         A2 - AB + BA - B2 =
         A2 - AB + AB - B2 =
         A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  5  is not a square !!

Ruling : Binomial can not be factored as the
difference of two perfect squares

Trying to factor as a Difference of Cubes:

 2.2      Factoring:  5x30-2 

Theory : A difference of two perfect cubes,  a3 - b3 can be factored into
              (a-b) • (a2 +ab +b2)

Proof :  (a-b)•(a2+ab+b2) =
            a3+a2b+ab2-ba2-b2a-b3 =
            a3+(a2b-ba2)+(ab2-b2a)-b3 =
            a3+0+0-b3 =
            a3-b3


Check :  5  is not a cube !!

Ruling : Binomial can not be factored as the difference of two perfect cubes

Final result :

  5x30 - 2

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