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OpenStudy (anonymous):
Factor. (x+5)^3-(2x+1)^3
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hartnn (hartnn):
\(\Large a^3-b^3= (a-b)(a^2+ab+b^2)\)
hartnn (hartnn):
here, a = x+5, b= 2x+1
hartnn (hartnn):
just plug this in the formula! what u get ?
OpenStudy (anonymous):
Not sure, could you just show me? It'll be easier for me to understand, then I'll try the same with a different question
hartnn (hartnn):
|dw:1382215703035:dw|
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