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If p = 8.15, q = 9.06 and r = -17.21, then the value of $p^3 +q^3 +r^3 -3pqr $ is : |
-3.81 -.5.62 4.75 0 |
0 |
p = 8.15, q = 9.06 and r = -17.21 Here we can see p + q = r 8.15 + 9.06 -17.21 = 0 If a + b + c = 0 then $p^3 +q^3 +r^3 -3pqr$ = 0 always. |
