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mafiozo [28]
3 years ago
9

Solve (1/8)^-3a=512^3a

Mathematics
2 answers:
lukranit [14]3 years ago
5 0
Solve (1/8)^-3a = 512^3a
A=0

I took the assignment it’s right.
melamori03 [73]3 years ago
5 0

Answer:

Using exponent rule:

\frac{1}{a^n}=a^{-n}

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

Solve:

(\frac{1}{8})^{-3a} =(512)^{3a}

We can write 512 as:

512 = 8 \cdot 8 \cdot 8 = 8^3

then;

(\frac{1}{8})^{-3a} =(8^3)^{3a}

⇒(\frac{1}{8})^{-3a} =(8)^{9a}

Using exponent rule we have;

⇒(8^{-1})^{-3a} =(8)^{9a}

⇒(8)^{3a} =(8)^{9a}

On comparing both sides we have;

3a = 9a

⇒9a-3a = 0

⇒6a = 0

⇒a = 0

Therefore, the value of a = 0

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