If a = 12, b = -7 and c = -5, then what

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If a = 12, b = -7 and c = -5, then what is the value of $ a^3 + b^3 + c^3 $ ?

Options:

1260

1125

1200

1380

Correct Answer:

1260

Explanation:

If a = 12, b = -7, c = -5,

Then what is the value of $ a^3 + b^3 + c^3 $

If the sum of a + b + c = 0 then the value of $ a^3 + b^3 + c^3 $ = 3abc

Here 12 - 7 - 5 =0

Then , $ a^3 + b^3 + c^3 $ = 3abc = 3 × 12 × -7 × -5 = 1260