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91Ó°ÊÓ

Multiply. $$ 4(2 a+6 b) $$

Short Answer

Expert verified
8a + 24b

Step by step solution

01

Understand the Problem

The task is to multiply a monomial by a binomial. The expression given is \(4(2a + 6b)\).
02

Apply the Distributive Property

To multiply the monomial \(4\) with each term inside the parentheses, apply the distributive property: \(a(b + c) = ab + ac\).
03

Multiply 4 by Each Term

Start by multiplying \(4\) by \(2a\), resulting in \(4 \times 2a = 8a\). Then multiply \(4\) by \(6b\), resulting in \(4 \times 6b = 24b\).
04

Combine the Results

Add the results of the multiplications from Step 3: \(8a + 24b\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Distributive Property
The distributive property is a fundamental concept in algebra. It allows you to multiply a single term by each term within a set of parentheses. This property is expressed as: \(a(b + c) = ab + ac\).
In applying this rule with our given exercise, we use the distributive property to multiply the monomial \(4\) by each term inside the binomial \(2a + 6b\).
By distributing the \(4\), each term inside the parentheses is multiplied individually, making complex algebraic equations simpler to handle.
Monomial
A monomial is a single-term expression consisting of a constant, a variable, or a product of both. Examples include \(7\), \(3x\), and \(4a^2b\).
In our exercise, the monomial is \(4\), which means it has only one term.
When you multiply a monomial by each term within a binomial, the distributive property comes into play. This multiplication knocks down the complexity step by step.
Binomial
A binomial is an algebraic expression containing exactly two different terms separated by a plus (+) or minus (−) sign. Examples are \(x+y\) and \(3a-4b\).
For the exercise we’re considering, \(2a+6b\) is the binomial.
Each term in the binomial is treated separately while applying the distributive property, breaking it into smaller parts to simplify calculation.
Step-by-Step Solution
Let's dive deeply into the exercise we've worked on. Here are the steps we followed:
1. **Understand the Problem**
Recognize our task as multiplying a monomial by a binomial. The given expression is \(4(2a+6b)\).
2. **Apply the Distributive Property**
We use the rule \(a(b+c) = ab + ac\) to distribute \(4\) to each term inside the parentheses.
3. **Multiply 4 by Each Term**
Start with the first term: \(4 \times 2a = 8a\). Then, proceed with the second term: \(4 \times 6b = 24b\).
4. **Combine the Results**
Adding the individual results, we get the final expression: \(8a + 24b\).
This straightforward, systematic approach ensures that you understand how to handle multiplying monomials with binomials.

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