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MrRa [10]
3 years ago
6

6x^2 - 2 and 6x^2 + 2

Mathematics
2 answers:
AlexFokin [52]3 years ago
7 0
2+2= 4
Easy Peary leman squeaky
Good
dimulka [17.4K]3 years ago
4 0
<h3>Answer: Division (choice B)</h3>

====================================================

If you add the two polynomials, you get

(6x^2-2)+(6x^2+2) = 12x^2

which is another polynomial.

We can rule out choice A.

----------------

If you subtract the polynomials, the same kind of story happens (but you'll get a different polynomial)

(6x^2-2)-(6x^2+2) = -4

The term -4 is a polynomial of degree 0.

We can rule out choice D.

-----------------

If you multiply the two polynomials, then you get another polynomial. Use the FOIL rule

(6x^2-2)(6x+2) = 36x^2 + 12x - 12x - 4 = 36x^2 - 4

or you could use the difference of squares rule to help expand

(6x^2-2)(6x+2) = (6x)^2 - (2)^2 = 36x^2 - 4

or you could use the box method (see Figure 1 in the attached images below)

Whichever method you use, the result is 36x^2 - 4 which is another polynomial.

We can rule out choice C. The only thing left is choice B.

-------------------

When dividing two polynomials, it is not always guaranteed to get another polynomial as a result. Use polynomial long division to calculate (6x^2-2)/(6x^2+2) and you'll get what you see in Figure 2 below. Figure 3 shows the long division table for (6x^2+2)/(6x^2-2). Both figures 2 and 3 show a nonzero remainder. The nonzero remainder means the result is not a polynomial.

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