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If a + b = 2 and ab = 3, then find a^3 + b^3.

 Mar 11, 2022
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OK....watch carefully :   surprise

 

(a+b)3   = 23

a3 + b3     + 3 a2b   + 3 ab2   = 8

a+ b3     + 3ab ( a + b)    = 8              now, you are given values for  ab  and  (a+b)  <======sub those in and solve for a3 +b3

 Mar 11, 2022

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