Math Problem Statement

((-2)^3 x (-2)^7)/3 x 4^6 simplify

Solution

Let's simplify the given expression:

(2)3×(2)73×46\frac{(-2)^3 \times (-2)^7}{3 \times 4^6}

Step 1: Combine powers of (2)(-2)

We use the property of exponents that states am×an=am+na^m \times a^n = a^{m+n}. Therefore:

(2)3×(2)7=(2)3+7=(2)10(-2)^3 \times (-2)^7 = (-2)^{3+7} = (-2)^{10}

Now the expression becomes:

(2)103×46\frac{(-2)^{10}}{3 \times 4^6}

Step 2: Rewrite 464^6

Since 4=224 = 2^2, we can rewrite 464^6 as:

46=(22)6=2124^6 = (2^2)^6 = 2^{12}

Step 3: Simplify the expression

Now substitute this back into the equation:

(2)103×212\frac{(-2)^{10}}{3 \times 2^{12}}

Since (2)10=210(-2)^{10} = 2^{10}, the expression becomes:

2103×212\frac{2^{10}}{3 \times 2^{12}}

Step 4: Apply the properties of exponents

Now, apply the property of exponents aman=amn\frac{a^m}{a^n} = a^{m-n}:

210212=21012=22\frac{2^{10}}{2^{12}} = 2^{10-12} = 2^{-2}

Thus, the expression becomes:

223=13×22=13×4=112\frac{2^{-2}}{3} = \frac{1}{3 \times 2^2} = \frac{1}{3 \times 4} = \frac{1}{12}

Final Answer:

112\boxed{\frac{1}{12}}

Would you like further details on any step or have any questions?

Here are 5 related questions:

  1. What happens when you multiply powers with the same base but different exponents?
  2. How do you simplify expressions involving negative exponents?
  3. Can you express (2)5×(2)4(-2)^5 \times (-2)^4 in terms of a single power of -2?
  4. How does the base being negative impact the powers in (2)n(-2)^n?
  5. Can you explain how 46=2124^6 = 2^{12} was derived?

Tip: When simplifying expressions with exponents, always group similar bases together first before applying exponent rules.

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Math Problem Analysis

Mathematical Concepts

Exponents
Simplifying Expressions
Properties of Exponents

Formulas

a^m * a^n = a^(m+n)
a^m / a^n = a^(m-n)
4^6 = (2^2)^6 = 2^12

Theorems

Laws of Exponents

Suitable Grade Level

Grades 9-10