Calculate (x×4×3)³: Cube of a Three-Term Product

Power Rules with Multi-Term Products

(x43)3= (x\cdot4\cdot3)^3=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simplify the following expression
00:03 When there is a power on a product of terms, all terms are raised to that power
00:11 We will use this formula in our exercise
00:16 We will raise each factor to the power
00:21 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

(x43)3= (x\cdot4\cdot3)^3=

2

Step-by-step solution

Let us begin by using the law of exponents for a power that is applied to parentheses in which terms are multiplied:

(xy)n=xnyn (x\cdot y)^n=x^n\cdot y^n

We apply the rule to our problem:

(x43)3=x34333 (x\cdot4\cdot3)^3= x^3\cdot4^3\cdot3^3

When we apply the power to the product of the terms within parentheses, we apply the power to each term of the product separately and keep the product,

Therefore, the correct answer is option C.

3

Final Answer

x34333 x^3\cdot4^3\cdot3^3

Key Points to Remember

Essential concepts to master this topic
  • Rule: When raising a product to a power, apply the exponent to each factor
  • Technique: (x43)3=x34333 (x\cdot4\cdot3)^3 = x^3\cdot4^3\cdot3^3 distributes the exponent
  • Check: Each factor gets cubed: x becomes x3 x^3 , 4 becomes 64, 3 becomes 27 ✓

Common Mistakes

Avoid these frequent errors
  • Applying the exponent to only one factor in the product
    Don't cube just one factor like x343 x^3\cdot4\cdot3 = wrong answer! This ignores the power rule and leaves some factors unchanged. Always apply the exponent to every single factor inside the parentheses.

Practice Quiz

Test your knowledge with interactive questions

\( 112^0=\text{?} \)

FAQ

Everything you need to know about this question

Why does the exponent apply to each factor separately?

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The power of a product rule states (ab)n=anbn (ab)^n = a^n b^n . This works because multiplication is repeated addition, so (x43)3 (x\cdot4\cdot3)^3 means multiply the entire product by itself 3 times.

What if I have numbers and variables mixed together?

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Treat them exactly the same! Whether it's a variable like x or a number like 4, each factor gets raised to the power. Variables become x3 x^3 and numbers get calculated like 43=64 4^3 = 64 .

Do I need to multiply 4×3 first before cubing?

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No! You can cube each factor separately: (x43)3=x34333=x36427 (x\cdot4\cdot3)^3 = x^3\cdot4^3\cdot3^3 = x^3\cdot64\cdot27 . This often makes the work easier than cubing (12x)3 (12x)^3 .

How do I remember which factors get the exponent?

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Simple rule: Everything inside the parentheses gets raised to the power! If it's being multiplied inside those parentheses, it must be raised to the 3rd power.

What's the final simplified answer?

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After applying the rule, you get x34333=x36427 x^3\cdot4^3\cdot3^3 = x^3\cdot64\cdot27 . You can multiply the numbers: 64×27=1728 64 \times 27 = 1728 , giving you 1728x3 1728x^3 .

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