Verify the Expansion: (4x+3)(8x+5) = 32x²+44x+15

Is equality correct?

(4x+3)(8x+5)=32x2+44x+15 (4x+3)(8x+5)=32x^2+44x+15

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Are the expressions equal?
00:03 Let's properly open parentheses, multiply each factor by each factor
00:24 Let's calculate the multiplications
00:40 Let's group the factors
00:48 Let's compare the expression terms, we can see they're equal
00:52 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Is equality correct?

(4x+3)(8x+5)=32x2+44x+15 (4x+3)(8x+5)=32x^2+44x+15

2

Step-by-step solution

To solve this problem, we'll employ the distributive property to verify the given equality:

Step 1: Expand the left-hand side expression (4x+3)(8x+5)(4x+3)(8x+5):

  • Calculate 4x8x=32x24x \cdot 8x = 32x^2

  • Calculate 4x5=20x4x \cdot 5 = 20x

  • Calculate 38x=24x3 \cdot 8x = 24x

  • Calculate 35=153 \cdot 5 = 15

Step 2: Combine like terms:

The expanded form is:
32x2+20x+24x+1532x^2 + 20x + 24x + 15

Combine like terms 20x20x and 24x24x:

This gives us 32x2+(20x+24x)+15=32x2+44x+1532x^2 + (20x + 24x) + 15 = 32x^2 + 44x + 15.

Step 3: Compare the expanded form with the right-hand side expression:

The expanded form, 32x2+44x+1532x^2 + 44x + 15, matches the right-hand side exactly.

Thus, the given equality (4x+3)(8x+5)=32x2+44x+15(4x+3)(8x+5) = 32x^2 + 44x + 15 is correct.

The correct answer 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?

\( (ab)(c d) \)

\( \)

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