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In Mathematics / High School | 2014-05-20

Expand and simplify the following expression:

[tex](a-2b)^3[/tex]

Asked by brooke1

Answer (2)

( x − y ) 3 = x 3 − 3 x 2 y + 3 x y 2 − y 3 − − − − − − − − − − − − − − − − − − − − − − − − − − ( a − 2 b ) 3 = a 3 − 3 a 2 ⋅ 2 b + 3 a ⋅ ( 2 b ) 2 − ( 2 b ) 3 = a 3 − 6 a 2 b + 12 a b 2 − 8 b 3

Answered by Anonymous | 2024-06-10

The expansion of ( a − 2 b ) 3 using the binomial theorem results in a 3 − 6 a 2 b + 12 a b 2 − 8 b 3 . This expression captures all terms obtained from the expansion. The final simplified form is a 3 − 6 a 2 b + 12 a b 2 − 8 b 3 .
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Answered by Anonymous | 2024-12-24