If a = 5, b = -2 and c = -3, a 3 + b 3 + c 3 is equal to : 1. -90 2. 90 3. 60 4. -60

By property, If a + b + c = 0, then a 3 + b 3 + c 3 = 3abc Since, 5 + (-2) + (-3) = 5 - 2 - 3 = 0. ∴ a 3 + b 3 + c 3 = 3 × 5 × -2 × -3 = 90. Hence, Option 2 is the correct option.

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Mathematics

If a = 5, b = -2 and c = -3, a³ + b³ + c³ is equal to :
-90
90
60
-60

Expansions

18 Likes

Answer

By property,

If a + b + c = 0, then

a³ + b³ + c³ = 3abc

Since, 5 + (-2) + (-3) = 5 - 2 - 3 = 0.

∴ a³ + b³ + c³ = 3 × 5 × -2 × -3 = 90.

Hence, Option 2 is the correct option.

Answered By

9 Likes

Mathematics

If a = 5, b = -2 and c = -3, a³ + b³ + c³ is equal to :
-90
90
60
-60

Expansions

Answer

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If a = 5, b = -2 and c = -3, a3 + b3 + c3 is equal to :-909060-60

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