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Blizzard [7]
3 years ago
11

Which factoring method would be best to factor x^2 - 9?

Mathematics
1 answer:
Vinil7 [7]3 years ago
8 0

Answer:

  D.  difference of squares

Step-by-step explanation:

Both of the terms x^2 and 9 are squares, so their difference is the difference of squares. The factorization of that is a "special form" that can be usefully memorized.

  a^2 -b^2 = (a -b)(a +b)

  x^2 -9 = (x -3)(x +3)

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dedylja [7]

If f(x) = 3x-4 and g(x) = 4-3x then the solution of f(g(x)) = g(f(x)) proves that they are not inverse functions.

According to the question,

We have the following two functions:

f(x) = 3x-4 and g(x) = 4-3x

We know that in order to find whether two functions are inverse of each other or not we need to find the value of f(g(x)) and g(f(x)) and then see whether they are equal to x.

Now, among the given options, the only option representing this kind of solution is option D and the solutions are not equal which proves that they are not inverse functions.

Hence, the correct option is D.

To know more about inverse functions here

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4 0
1 year ago
Order the numbers from LEAST to GREATEST. <br> -0.222, 0, and one fourth
Rasek [7]
-0.222
0
one fourth (you already had it in order)
4 0
3 years ago
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shtirl [24]
8+24v you need to show your work so here

3 0
4 years ago
Is three a solution of z^2 +1=4+3z?
DiKsa [7]

Answer:

no

Step-by-step explanation:

z^2 +1=4+3z

Substitute into the equation and see if it is true

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This is not a true statement so this is not a solution

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Step-by-step explanation:

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