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3 years ago

Which value of a would make the following expression completely factored

Mathematics

2 answers:

solmaris [256]3 years ago

6 0

Answer:

Step-by-step explanation:

We know that the expression (x^2 - a^2) can be written as (x-a)(x+a). So an expression of this type: (x^2 - a^2) wouldn't be completely factored because it could be factorized even more.

So we know that 36 = 6^2, 49= 7^2 and 81 = 9^2. So if we choose any of these options (Option B, C and D) it wouldn't be completely factored.

The correct is the option A, given that if a=12, it wouldn't be a perfect square, so it would be completely factored.

Bogdan [553]3 years ago

6 0

So I just did the problem and im pretty sure the answer is A

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Since the change in the value of the function is $dy$ and we know that the change in x is $dx=0.01$ , then we have:

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$dy=\frac{1}{2}(0.01)$

$dy=\frac{1}{200}$

Therefore, the 2nd option is correct

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