Verify the Equation: (-4-x)(7+x) = -28-11x-x²

Is equality correct?

(4x)(7+x)=2811xx2 (-4-x)(7+x)=-28-11x-x^2

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:10 Are these expressions equal? Let's find out!
00:14 First, open the parentheses. Multiply each factor by every other factor. Ready?
00:32 Now, calculate each multiplication carefully. You can do it!
00:49 Great! Let's group all the similar factors together. Excellent!
00:56 Finally, compare the terms of both expressions. Are they the same? Yes, they are!
01:02 And that's how we find the solution. Nice work!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Is equality correct?

(4x)(7+x)=2811xx2 (-4-x)(7+x)=-28-11x-x^2

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Expand the expression on the left side using the distributive property

  • Step 2: Simplify the expanded expression

  • Step 3: Compare the simplified expression with the given expression on the right side

Now, let's work through each step:
Step 1: Expand using the distributive property. We apply the formula: (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d) = ac + ad + bc + bd.

For (4x)(7+x)(-4-x)(7+x), distribute each term:
(4)(7)+(4)(x)+(x)(7)+(x)(x)(-4)(7) + (-4)(x) + (-x)(7) + (-x)(x)

Step 2: Simplify the terms:
284x7xx2-28 - 4x - 7x - x^2
Combine like terms: 2811xx2-28 - 11x - x^2

Step 3: Compare this with the given expression 2811xx2-28 - 11x - x^2. Both sides of the equation are identical, indicating the expressions are equivalent.

Therefore, the solution to the problem confirms the expressions are equal, and the correct choice is Yes.

3

Final Answer

Yes

Practice Quiz

Test your knowledge with interactive questions

It is possible to use the distributive property to simplify the expression below?

What is its simplified form?

\( (ab)(c d) \)

\( \)

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Algebraic Technique questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations