Solution - Factoring binomials using the difference of squares
Other Ways to Solve
Factoring binomials using the difference of squaresStep by Step Solution
Step 1 :
Trying to factor as a Difference of Squares :
1.1 Factoring: x6588-r6
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 : x6588 is the square of x3294
Check : r6 is the square of r3
Factorization is : (x3294 + r3) • (x3294 - r3)
Trying to factor as a Sum of Cubes :
1.2 Factoring: x3294 + r3
Theory : A sum 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 : x3294 is the cube of x1098
Check : r3 is the cube of r1
Factorization is :
(x1098 + r) • (x2196 - x1098r + r2)
Trying to factor as a Sum of Cubes :
1.3 Factoring: x1098 + r
Check : x1098 is the cube of x366
Check : r 1 is not a cube !!
Ruling : Binomial can not be factored as the difference of two perfect cubes
Trying to factor a multi variable polynomial :
1.4 Factoring x2196 - x1098r + r2
Try to factor this multi-variable trinomial using trial and error
Factorization fails
Trying to factor as a Difference of Squares :
1.5 Factoring: x3294 - r3
Check : x3294 is the square of x1647
Check : r3 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:
1.6 Factoring: x3294 - r3
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 : x3294 is the cube of x1098
Check : r3 is the cube of r1
Factorization is :
(x1098 - r) • (x2196 + x1098r + r2)
Trying to factor as a Difference of Squares :
1.7 Factoring: x1098 - r
Check : x1098 is the square of x549
Check : r1 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:
1.8 Factoring: x1098 - r
Check : x1098 is the cube of x366
Check : r 1 is not a cube !!
Ruling : Binomial can not be factored as the difference of two perfect cubes
Trying to factor a multi variable polynomial :
1.9 Factoring x2196 + x1098r + r2
Try to factor this multi-variable trinomial using trial and error
Factorization fails
Final result :
(r+x1098)•(x2196+r2-x1098r)•(x1098-r)•(x2196+r2+x1098r)
How did we do?
Please leave us feedback.