Find the product (x- 4) (x + 4)

Mathematics

2 answers:

Vinil7 [7]3 years ago

5 0

Answer:

x^2 - 16

Step-by-step explanation:

Olegator [25]3 years ago

4 0

Answer:

x² - 16

Step-by-step explanation:

(x - 4)(x + 4)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x + 4) - 4(x + 4) ← distribute both parenthesis

= x² + 4x - 4x - 16 ← collect like terms

= x² - 16

You might be interested in

Lucille has a collection of more than 500 songs on her phone that have a mean duration of 215 seconds and a standard deviation o

DochEvi [55]

Answer:

The mean of the sampling distribution is of 215 seconds and the standard deviation is 5.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .