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damaskus [11]
3 years ago
14

Question 4(Multiple Choice Worth 1 points) (07.04 LC) Factor completely 49x2 − 9. (7x + 3)(7x − 3) (7x + 3)(x − 3) (7x − 3)(7x −

3) (7x − 3)(x − 3)
Mathematics
2 answers:
lana66690 [7]3 years ago
8 0

Answer:

the answer to this is

(7x-3)(7x+3)

49x^2-21x+21x-9

49x^2-9

Step-by-step explanation:

scoundrel [369]3 years ago
6 0

Answer:

A

Step-by-step explanation:

We take a look at this expression: 49x^2-9 and notice that both terms are square numbers. 49x^2=(7x)^2 and 9=3^2.

There is a specific formula that I highly recommend you memorize involving differences of squares. It states that given the difference of squares a^2-b^2, it can always be factored into (a+b)(a-b).

Here, we can apply that. In this case, a = 7x and b = 3. So:

49x^2-9=(7x)^2-3^2=(7x+3)(7x-3)

Thus, the answer is A.

Hope this helps!

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