Question

(a-b)=5 ,ab=3 , find a cube - b cube=​

Answer 1

Answer:

110

Step-by-step explanation:

$a^3-b^3 = (a-b)(a^2+ab+b^2)\\Since, \ (a-b)^2 = a^2 +b^2 +2ab\\5^2 = a^2 +b^+2(3)\\a^2 + b^2 = 25-6 = 19\\Now, a^3-b^3 = (a-b)(a^2+ab+b^2)\\= (5)(19 + 3)\\= 5 * 22\\= 110$

Answer 2

Answer:

sorry i do not know the answer

Step-by-step explanation:

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