Ask Me Help Desk - Factoring 2x^3-1

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factoring 2x^3-1

hellooo!!

I need help with this question so pleeeeease help! :confused:

factor 2x^3-1

^ means to raise the power... ;)

thanks again!!

Use the difference of two cubes:

$a^{3}-b^{3}=(a-b)(a^{2}+ab+b^{2})$

$(2^{\frac{1}{3}}x)^{3}-(1)^{3}$

$a=2^{\frac{1}{3}}x, \;\ b=1$

$(2^{\frac{1}{3}}x-1)(2^{\frac{2}{3}}x^{2}+2^{\frac{1}{3}}x+1)$

See how that was done?

Yes... thank you!!

I need help tooo

hay hlepp solve by factoring 3x^+21=0 ^=squared

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