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Plz need  help

 

Let a and b be real numbers such that a^3 + 3ab^2 = 679 and a^3 - 3ab^2 = 673.  Find a - b.

 Jan 27, 2023
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2a^3=1352. a=26^2/3

 

1352x^2=6, x=sqrt(3/26) or its negative.

 

a-b=8.44 or 9.12

 Jan 27, 2023

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