Which polynomial can be simplified to a difference of squares.

Mathematics

1 answer:

viktelen [127]2 years ago

6 0

Answer:

Step-by-step explanation:

The difference of two squares:

a²-b² = (a - b) ( a + b)

a²-b² = a² + ab -ab +b²

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Which statement is true? O A. The number 23 is prime, but 36 is composite. B. The number 33 is prime, but 42 is composite. OC. T

IRINA_888 [86]

Answer: A. The number 23 is prime, but 36 is composite.

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Explanation:

Let's go through the possible answer choices

A) This is true because 23 only has the factors 1 and 23. So that's why 23 is prime. We can say 36 is composite since 2 is a factor, ie 36 = 2*18.
B) This is false because 33 is not prime. Note how 33 = 3*11, showing that 3 is a factor of 33.
C) Similar to B, the statement "21 is prime" is false. Note how 21 = 3*7.
D) Like the other false statements, 27 is not prime because 27 = 3*9.

3 0

3 years ago

Can someone answer these pls

Ipatiy [6.2K]

Answer:

It could possibly A or D

Step-by-step explanation:

7 0

3 years ago

I need the answer.Help me out

rosijanka [135]

The answer is $\boxed{7},$ where $a=5$ and $b=2.$

<em>Solution sketch:</em>

Apply the Pythagorean theorem to find $EC$ and $AE,$ which you then use to find $AD$ and $BC.$ Apply Heron's formula to $\triangle ABC$ to find that its area is 10, and then use $[ABC]=\frac{(AB)(CF)}{2}$ (base times height over 2) to finish by solving for $CF.$ .