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jeka57 [31]
2 years ago
10

How do you answer this?

Mathematics
2 answers:
kobusy [5.1K]2 years ago
8 0

Answer:

<h2>x= -3/2</h2>

Step-by-step explanation:

((4)²)^x = 1/(4)³

4²^x = 4³

thus the powers are same then

2x =-3

<h2>x=-3/2</h2>
Sergeeva-Olga [200]2 years ago
5 0

Answer:

x = - \frac{3}{2}

Step-by-step explanation:

Using the rules of exponents

(a^m)^{n} = a^{mn}

a^{-m} ⇔ \frac{1}{a^m}

Note that 16 = 4² and 64 = 4³ , then

16^{x} = \frac{1}{64} , can be expressed as

(4^2)^{x} = \frac{1}{4^3} , that is

4^{2x} = 4^{-3}

Since the bases on both sides are equal, then equate the exponents

2x = - 3 ( divide both sides by 2 )

x = - \frac{3}{2}

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Here's my work:

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