All categories

2 years ago

Expand and combine like terms. (4b^2+ 3) (4b^2- 3) = 1 SEE ANSWER

Mathematics

1 answer:

krok68 [10]2 years ago

8 0

Answer:

Step-by-step explanation:

(4b^2+3)(4b^2-3)

since it is the expanded form of formula a^2-b^2=(a+b)(a-b) we can write,

=(4b^2)^2-(3)^3

=16b^4-9

You might be interested in

The carpet erin has chosen costs $2.50 per square foot . how much will it coast her to carpet the

baherus [9]

All you do is 2.5 times the number of feet so 2.5x , x is the number of feet

3 0

3 years ago

Determine the measure of each indicated angle. Show all necessary steps!

Rasek [7]

We know that a 4-sided polygon's angles add up to 360 degrees

so to find x:

360-(69+118+84)=89 degrees

For a 4-sided polygon we also know that the outside angles add up to 360 degree.

so to find p:

360-(100+62+106)=92 degrees

Hope it helps!

3 0

1 year ago

Please solve this worksheet. (Factoring trinomials)

mash [69]

Answer:

where's the worksheet

Step-by-step explanation:

6 0

2 years ago

A rectangle has a length that is 4 ft more

Ludmilka [50]

Answer:

length = 14 width = 10

Step-by-step explanation:

48/4=12

10+10+14+14=48

6 0

2 years ago

Read 2 more answers

Find the standard deviation of 21, 31, 26, 24, 28, 26

Vesnalui [34]

Given the dataset

$x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}$

We start by computing the average:

$\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26$

We compute the difference bewteen each element and the average:

$x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}$

We square those differences:

$(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}$

And take the average of those squared differences: we sum them

$\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69$

And we divide by the number of elements:

$\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5$

Finally, we take the square root of this quantity and we have the standard deviation:

$\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39$

8 0

3 years ago