solve a cube + b cube when a+b=6 and ab =7

pls tell urgent​

2 thoughts on “solve a cube + b cube when a+b=6 and ab =7 <br /><br />pls tell urgent​”

1. Answer:

   A cube + B cube = 90

   Step-by-step explanation:

   use the formula (a+b)cube= a cube + b cube + 3ab( a+b)

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2. Answer:

   a+b=6

   ab=7

   a^3+b^3

   =(a+b)^3-3ab(a+b)

   =(6)^3-3.7.6

   =216-126

   =90

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