High School

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Which equation is equivalent to the given equation?

[tex]-2x^2 + 32x = 126[/tex]

A. [tex]2x^2 + 32x + 126 = 0[/tex]

B. [tex]2x^2 - 32x - 126 = 0[/tex]

C. [tex]2x^2 + 32x - 126 = 0[/tex]

D. [tex]2x^2 - 32x + 126 = 0[/tex]

Answer :

We start with the equation

[tex]$$-2x^2 + 32x = 126.$$[/tex]

Step 1. Bring all terms to one side of the equation

Subtract [tex]\(126\)[/tex] from both sides to obtain

[tex]$$-2x^2 + 32x - 126 = 0.$$[/tex]

Step 2. Multiply both sides by [tex]\(-1\)[/tex]

Multiplying the entire equation by [tex]\(-1\)[/tex] (which maintains the equality) gives

[tex]$$2x^2 - 32x + 126 = 0.$$[/tex]

Step 3. Compare with the available options

The equation we obtained is

[tex]$$2x^2 - 32x + 126 = 0.$$[/tex]

Among the given options:

1) [tex]\(2x^2 + 32x + 126 = 0\)[/tex]

2) [tex]\(2x^2 - 32x - 126 = 0\)[/tex]

3) [tex]\(2x^2 + 32x - 126 = 0\)[/tex]

4) [tex]\(2x^2 - 32x + 126 = 0\)[/tex]

We see that option 4 exactly matches the equation we derived.

Final Answer: Option 4:

[tex]$$2x^2 - 32x + 126 = 0.$$[/tex]

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