Math, asked by knowledge12345, 9 months ago

QUESTION 30 AND 31 !!!!!!!!!!!!! HELPPPP

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Answered by faizeen143

Answered by srikanthn711

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By data , we have to find the value of a^3+b^3

Given a+b=10,ab=21

We shall use the identity (a+b)^3=a^3+b^3+3ab(a+b)

Here putting, a+b=10,ab=21

(10)3=a^3+b^3+3(21)(10)

1000=a^3+b^3+630

1000-630=a^3+b^3

370=a^3+b^3

Hence the value of a^3+b^3 is 370.

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