Math Problem Statement

Evaluate (-7)^2 and (-4)^3.

Solution

Let’s evaluate the given expressions.

  1. (7)2(-7)^2

    • Squaring means multiplying the base (7)(-7) by itself: (7)×(7)=49(-7) \times (-7) = 49 So, (7)2=49(-7)^2 = 49.
  2. (4)3(-4)^3

    • Cubing means multiplying the base (4)(-4) by itself three times: (4)×(4)×(4)(-4) \times (-4) \times (-4) First, multiply the first two terms: (4)×(4)=16(-4) \times (-4) = 16 Then multiply the result by (4)(-4): 16×(4)=6416 \times (-4) = -64 So, (4)3=64(-4)^3 = -64.

Final Results:

  1. (7)2=49(-7)^2 = 49
  2. (4)3=64(-4)^3 = -64

Let me know if you need further clarification or have additional questions!

Related Questions:

  1. What happens when we raise a negative number to an even power?
  2. How does raising a negative number to an odd power affect the sign of the result?
  3. Can you apply these concepts to solve real-world problems involving powers?
  4. How are these rules used in algebraic expressions involving variables?
  5. How does the distributive property relate to powers and exponents?

Tip:

Remember, negative bases raised to even powers always result in positive values, while odd powers maintain the negative sign!

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Math Problem Analysis

Mathematical Concepts

Exponents
Negative Numbers
Powers

Formulas

a^n where n is a positive integer
(-a)^n = a^n if n is even
(-a)^n = -a^n if n is odd

Theorems

Even powers of negative numbers result in positive values.
Odd powers of negative numbers retain the negative sign.

Suitable Grade Level

Grades 6-8