Answers

2015-09-25T16:38:19+05:30
U can find this by the identity ,
                  ∵x+y+z=0
                  ∴x^3+y^3+z^3=3xyz
and,             45-25-20=0
                 ⇒(45)^3-(25)^3-(20)^3=3(45)(-25)(-20)
                 ∴ur answer is 67500
                          hope this will help u.











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