Factorization of Expressions Reducible to Difference of Two Squares
Factorization...
Question
Factorization of (a−b)3+(b−c)3+(c−a)3 is:
A
(a−b)(a−c)
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B
(a−b)(b−c)(c−a)
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C
3(a−b)(b−c)(c−a)
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D
32(a−b)(b−c)(c−a)
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Solution
The correct option is C3(a−b)(b−c)(c−a) Let x=a−b;y=b−c;z=c−a. On adding, x+y+z=0 ∴x3+y3+z3=3xyz Substituting x=(a−b);y=(b−c)and z=(c−a) (a−b)3+(b−c)3+(c−a)3 =3(a−b)(b−c)(c−a)