please I need help
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Answered by
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Step-by-step explanation:
hey mate here is your answer:
cube of:
a)
1)0.9
= 0.9×0.9×0.9
=0.729
2)-8
= -8×-8×-8
= -512
b)
(12ab)×(-8abc)×(5ac)
= 12×-8×5×ab×abc×ac
= -480a^3b^2c^2
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