Question

Difficulty: EasyOperations with Variable Exponents

Match each algebraic expression with its simplified equivalent form.

  • x3⋅x2x^3 \cdot x^2x5x^5
  • x8x2\frac{x^8}{x^2}x6x^6
  • (x4)2(x^4)^2x8x^8
  • x−3x^{-3}1x3\frac{1}{x^3}

Answer

The matches are: x3⋅x2x^3 \cdot x^2 simplifies to x5x^5, x8x2\frac{x^8}{x^2} simplifies to x6x^6, (x4)2(x^4)^2 simplifies to x8x^8, and x−3x^{-3} simplifies to 1x3\frac{1}{x^3}.
Each expression correctly pairs with its simplified form by applying the four fundamental rules of exponents: the product rule, the quotient rule, the power of a power rule, and the negative exponent rule.

Step-by-Step Solution

1
Apply the product rule for exponents to x3⋅x2x^3 \cdot x^2.
x3+2=x5x^{3+2} = x^5
Multiplying identical bases requires adding the exponents.
2
Apply the quotient rule for exponents to x8x2\frac{x^8}{x^2}.
x8−2=x6x^{8-2} = x^6
Dividing identical bases requires subtracting the denominator's exponent.
3
Apply the power rule for exponents to (x4)2(x^4)^2.
x4⋅2=x8x^{4 \cdot 2} = x^8
Raising an exponent to another power requires multiplying the exponents.
4
Apply the negative exponent rule to x−3x^{-3}.
1x3\frac{1}{x^3}
A negative exponent signifies the reciprocal of the corresponding positive exponent.

Key Concept

Operations with Variable Exponents
Estimated Time:1m 0s
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