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Evaluate: 30^3+20^3-50^3...

Evaluate: `30^3+20^3-50^3`

Text Solution

Verified by Experts

Given:
`30^3+20^3-50^3=30^3+20^3−(20+30)^3`
`=30^3+20^3−20^3−30^3−3xx20xx30xx(50)`
`=-90000`
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Knowledge Check

  • If b+c =10, c +a =20 , a+b =30 then value of a^(3) +b^(3) +c^(3) is

    A
    9000
    B
    12000
    C
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    D
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  • IF 1^3+2^3+3^3+……+10^3=3025 then find the value of 2^3+4^3+6^3+…..20^3

    A
    6050
    B
    9075
    C
    12100
    D
    24200

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