Aptitude | Algebra | Question 3

If x takes only real numbers. For what value of x, the value of the expression: 4−6x−x² will be maximum?

(A)

-4

(B)

-3

(C)

0

(D)

3

Answer: (B)

Explanation:

Differentiate and equate to 0 6+2x =0 x=−3

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