If a − b = 4 and ab = 21, find the value of a³ −b³

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Solution

In the given problem, we have to find the value of

Given

We shall use the identity

Here putting,

Hence the value of is .

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Similar questions

If a - b = 4 and ab = 21, find the value of $a^{3} - b^{3} .$

If a + b = 10 and ab = 21, find the value of $a^{3} + b^{3}$ .

a + b = 10

a b = 21

a^{3 +} b^{3}

a^{3} - b^{3}

a^{3} + b^{3} =

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