If ab is equal to 5 and a minus b is equal to 2 then find the value of

1.	If ab is equal to 5 and a minus b is equal to 2 then find the value of a cube minus b cube
Answer» ANSWER: Step-by-step explanation: AB=5 a-b=2 then cubing both sides in a-b=2. We get (a-b)^3=2^3 a^3-b^3-3ab(a-b)=8 Putting VALUES of ab and a-b we get a^3-b^3-3×5(2)=8 a^3-b^3-30=8 a^3-b^3=8+30=30 a^3-b^3=38

If ab is equal to 5 and a minus b is equal to 2 then find the value of a cube minus b cube

Answer»

ANSWER:

Step-by-step explanation:

AB=5

a-b=2

then cubing both sides in a-b=2. We get

(a-b)^3=2^3

a^3-b^3-3ab(a-b)=8

Putting VALUES of ab and a-b we get

a^3-b^3-3×5(2)=8

a^3-b^3-30=8

a^3-b^3=8+30=30

a^3-b^3=38

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If ab is equal to 5 and a minus b is equal to 2 then find the value of a cube minus b cube​

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If ab is equal to 5 and a minus b is equal to 2 then find the value of a cube minus b cube