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can u algebra pls : (2a-1)^3

 Dec 1, 2019
edited by Guest  Dec 1, 2019
 #1
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Answer:

8a^3−12a^2+6a−1

 Dec 1, 2019
 #2
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Let us start with the original equation:

 

\((2a-1)^3\)

 

Splitting it up, or making it easier, we should put it into:

 

\((2a-1)(2a-1)(2a-1)\)

 

Multiplying the first two,:

 

\((4a^2-2a-2a+1)(2a-1)\)

 

Simplifying and Mathifying:

 

\((4a^2-4a+1)(2a-1) \\ =(8a^3-4a^2-8a^2+4a+2a-1) \\ =(8a^3-12a^2+6a-1)\)

 

So in the end, the answer is:

 

(8a^3-12a^2+6a-1)

 Dec 1, 2019

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