Math Problem Statement

A rectangle has a height of 3b^2 and a width of 4b^4 + 2b - 6. Express the area of the entire rectangle as a polynomial in standard form.

Solution

To solve the problem in the image:

The height of the rectangle is 3b23b^2 and the width is given by 4b4+2b64b^4 + 2b - 6.

To find the area of the rectangle, we need to multiply these two expressions together:

Area=(3b2)×(4b4+2b6)\text{Area} = (3b^2) \times (4b^4 + 2b - 6)

We'll distribute 3b23b^2 to each term inside the parentheses:

  1. 3b2×4b4=12b63b^2 \times 4b^4 = 12b^6
  2. 3b2×2b=6b33b^2 \times 2b = 6b^3
  3. 3b2×(6)=18b23b^2 \times (-6) = -18b^2

Now, combine these results:

Area=12b6+6b318b2\text{Area} = 12b^6 + 6b^3 - 18b^2

So, the area of the rectangle is:

12b6+6b318b212b^6 + 6b^3 - 18b^2

Would you like any more details or explanations?

Here are five related questions to help expand your understanding:

  1. What is the process of distributing a term over a polynomial called?
  2. How would the solution change if the rectangle's height was different, say 4b24b^2?
  3. Can you factor out any common terms from the expression 12b6+6b318b212b^6 + 6b^3 - 18b^2?
  4. How would you approach this problem if the rectangle's dimensions were given in more complex expressions?
  5. What is the significance of expressing the area as a polynomial?

Tip: Always double-check your distribution to make sure every term inside the parentheses is multiplied correctly!

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Math Problem Analysis

Mathematical Concepts

Polynomials
Distributive Property
Algebraic Expressions

Formulas

Area = height × width
Distributive Property: a(b + c) = ab + ac

Theorems

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Suitable Grade Level

Grades 8-10