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cricket20 [7]
3 years ago
8

Describe how (2 ^ 3)(2 ^ - 4) can be simplified . Multiply the bases and add the exponents. Then find the reciprocal and change

the sign of the exponent . The same base and add the exponents . Then multiply by - 1 . The base and multiply the exponents . Then multiply by -1 Add the exponents and keep the same base Then find the reciprocal and change the sign of the exponent .
Mathematics
1 answer:
tigry1 [53]3 years ago
4 0

Answer:

Add the exponents and keep the same base Then find the reciprocal and change the sign of the exponent .

Step-by-step explanation:

Given the expression  (2^3)(2^- 4), we will apply the law of indices below to solve the equation;

a^m \times a^n = a^{m+n}\\a^{-m} =\frac{1}{a^m}

Applying this on the given expression;

(2 ^ 3)(2 ^{-4})

Step 1: Add the exponents and keep the same base as shown;

= (2 ^ 3)(2 ^{-4})\\\\= 2^{3+(-4)}\\\\ = 2^{3-4}\\\\= 2^{-1}

Step 2: Find the reciprocal and change the sign of the exponent

= 2^{-1} \\= \frac{1}{2^1}\\= \frac{1}{2}

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