Without actually calculating the cubes, find the value of each of the following:
(i) (-12) + (7)3 + (5)3
(ii) (28) + (-15) +(-13);
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Step-by-step explanation:
(I) (-12)+(7)³+(5)³
= -12+7*7*7+5*5*5
= -12+343+125
= -12+468
= 456
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