Question

If a + b equal to 9 and ab is equal to 7 then a cube plus b cube equal to

Answer 1

Step-by-step explanation:

HEY MATE YOUR ANSWER IS HERE ^_^

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

9^3 = a^3 + b^3 + 3*7*9

a^3 + b^3 = 729 - 189

a^3 + b^3 = 540

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