Connect with a global community of experts on IDNLearn.com. Ask your questions and receive comprehensive and trustworthy answers from our experienced community of professionals.

Which expression is equivalent to [tex]$2x^2 - 2x + 7$[/tex]?

A. [tex](4x + 12) + (2x^2 - 6x + 5)[/tex]
B. [tex](x^2 - 5x + 13) + (x^2 + 3x - 6)[/tex]
C. [tex](4x^2 - 6x + 11) + (2x^2 - 4x + 4)[/tex]
D. [tex](5x^2 - 8x + 120) + (-3x^2 + 10x - 13)[/tex]


Sagot :

Sure! Let's solve the problem step-by-step to find which expression is equivalent to \(2x^2 - 2x + 7\).

We need to check each given option by simplifying and combining their terms to see which one matches the target expression \(2x^2 - 2x + 7\).

1. Option 1:
[tex]\[ (4x + 12) + (2x^2 - 6x + 5) \][/tex]
Combine the terms:
[tex]\[ 4x + 12 + 2x^2 - 6x + 5 = 2x^2 - 2x + 17 \][/tex]
This simplifies to:
[tex]\[ 2x^2 - 2x + 17 \][/tex]
This does not match \(2x^2 - 2x + 7\).

2. Option 2:
[tex]\[ (x^2 - 5x + 13) + (x^2 + 3x - 6) \][/tex]
Combine the terms:
[tex]\[ x^2 - 5x + 13 + x^2 + 3x - 6 = 2x^2 - 2x + 7 \][/tex]
This simplifies to:
[tex]\[ 2x^2 - 2x + 7 \][/tex]
This matches \(2x^2 - 2x + 7\).

3. Option 3:
[tex]\[ (4x^2 - 6x + 11) + (2x^2 - 4x + 4) \][/tex]
Combine the terms:
[tex]\[ 4x^2 - 6x + 11 + 2x^2 - 4x + 4 = 6x^2 - 10x + 15 \][/tex]
This simplifies to:
[tex]\[ 6x^2 - 10x + 15 \][/tex]
This does not match \(2x^2 - 2x + 7\).

4. Option 4:
[tex]\[ (5x^2 - 8x + 120) + (-3x^2 + 10x - 13) \][/tex]
Combine the terms:
[tex]\[ 5x^2 - 8x + 120 - 3x^2 + 10x - 13 = 2x^2 + 2x + 107 \][/tex]
This simplifies to:
[tex]\[ 2x^2 + 2x + 107 \][/tex]
This does not match \(2x^2 - 2x + 7\).

Based on the calculations above, the expression that is equivalent to \(2x^2 - 2x + 7\) is:

[tex]\[ \left( x^2 - 5x + 13 \right) + \left( x^2 + 3x - 6 \right) \][/tex]

Therefore, the correct answer is Option 2.
We greatly appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. For trustworthy and accurate answers, visit IDNLearn.com. Thanks for stopping by, and see you next time for more solutions.