High School

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Simplify the expression:

[tex]\left(6x - 1 + 5x^3 - 4x^4\right) + \left(3 - 4x - 4x^4 + 7x^3\right)[/tex]

A) [tex]-8x^4 + 9x^3 + x + 2[/tex]
B) [tex]-8x^4 + 9x^3 + 2x + 2[/tex]
C) [tex]-8x^4 + 12x^3 + 2x + 2[/tex]
D) [tex]-8x^4 + 9x^3 - 4x + 2[/tex]

Choose the correct option:
A
B
C
D

Answer :

Sure, let's go through the process step-by-step.

1. Identify the given polynomial expressions:
- The first expression is [tex]\(6x - 1 + 5x^3 - 4x^4\)[/tex].
- The second expression is [tex]\(3 - 4x - 4x^4 + 7x^3\)[/tex].

2. Combine like terms:
To add these two polynomials, we'll group and add the coefficients of like terms (i.e., terms with the same power of [tex]\(x\)[/tex]).

3. Add the constant terms:
[tex]\[
-1 + 3 = 2
\][/tex]

4. Add the [tex]\(x\)[/tex] terms:
[tex]\[
6x - 4x = 2x
\][/tex]

5. Add the [tex]\(x^3\)[/tex] terms:
[tex]\[
5x^3 + 7x^3 = 12x^3
\][/tex]

6. Add the [tex]\(x^4\)[/tex] terms:
[tex]\[
-4x^4 - 4x^4 = -8x^4
\][/tex]

7. Combine all the terms:
Putting it all together, the combined expression is:
[tex]\[
-8x^4 + 12x^3 + 2x + 2
\][/tex]

Therefore, the correct answer is option C: [tex]\(-8x^4 + 12x^3 + 2x + 2\)[/tex].

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