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Laws of Exponents for Real Numbers

If ab = 2a + ...

Question

If a^b = 2a + b, then find 4^(-6).

A

-2

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B

14

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C

2

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D

-8

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Solution

The correct option is C 2

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Similar questions

Q. Simplify the expression 2(a + ab + 3) - ab and find its value when a = 5 and b = - 3.

a - b = 4

a + b = 6

a b

A = ⎡ ⎢ ⎣ \begin{matrix} - 2 46 \end{matrix} ⎤ ⎥ ⎦

B = [14 - 6]

A B

a b = 2 a + 3 b

where a > 0, b > 0, then find the minimum value of ab.

A = d i a g [2, - 3, - 5], B = d i a g [4, - 6, - 3]

C = d i a g [- 3, 4, 1]

2 A + B - 5 C

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