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34kurt
3 years ago
14

PLEASE HELP EXTRA POINTS / WRONG ANSWERS WILL BE REPORTED

Mathematics
1 answer:
timofeeve [1]3 years ago
5 0

Q1. The limit from the right is -4. (The limit from the left, and the value of f(3) are different, but that doesn't matter for the question asked. Taken together, they mean that the limit as x approaches 3 does not exist. But that is not the question asked.)


Q2. f(x) = 4/x.

f'(x) = -4/x^2, so f'(2) = -4/2^2 = -1.


Q3. Since the denominator is zero at x=7, the only answer choice that makes any sense is the first one:

-∞; x = 7

It also happens to be the right one.

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The equivalent expression to the given expression 25x²+16−40x−64y² are; (5x-4)²−64y² and (5x−4−8y)(5x+4+8y)

<h3>Difference of two squares</h3>

According to the question:

  • We are required to determine the equivalent expression.

When we try to factorise the given expression systematically; we have;

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By the difference of two squares concept;

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Therefore, an equivalent expression is; (5x-4)²−64y²

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brainly.com/question/2972832

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