Phân tích các đa thức: x^3+3x^2+3x+1

What is the following product ?

AfilCa [17]

Answer:

The correct answer is option B). 7x² -12x√14 + 72

Step-by-step explanation:

Identity

(a - b)² = a² - 2ab + b²

Find the product

It is given that ( x√7 - 3√8)(x√7 - 3√8)

(x√7 - 3√8)(x√7 - 3√8) = (x√7 - 3√8)²

(x√7 - 3√8)² = (x√7)² - 2*x√7*3√8 +(3√8)²

= 7x² - 6x√56 + 72

= 7x² - 6x*2√14 + 72

= 7x² - 12x√14 + 72

Therefore the correct answer is option B). 7x² - 12x√14 + 72

8 0

3 years ago

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The answers are here I just need the work please!!

Flura [38]

the answer 236e

plzzzzzzzzzzz f u ck off

4 0

4 years ago

Find a number in the sequence 1) 100, 400, 610, ?, 652 2) 342, 128, ?, 26

dsp73

Answer:

1. 460

2. 216

Step-by-step explanation:

1.

From the series ,

100 , 400 , 610 , ? , 652

Writing the the digits in the revere order , i.e

001 , 004 , 016 , ? , 256

Now,

Now , getting the number in the form of the multiple of 4 as -

1 , 1 * 4 = 4 , 4 * 4 = 16 , ? , 64 * 4 = 4

Hence , the value for ? = 16 * 4 = 64 .

Again , reversing 64 to get the missing number of the series -

460 .

Hence ,

The value for ? is 460 .

2.

From the series ,

342 , 128 , ? , 26

Now, multiplying the first digit with the second digit and merging it to the product of the second and third digit -

3 * 4 and 4 * 2 , 1 * 2 and 2 * 8 , ?

128 , 216 , ?

Hence ,

The value for question mark = 1 * 2 and 1 * 6 = 216

Hence ,

The value for ? is 216 .

4 0

3 years ago

RSTU is a parallelogram. If m∠SRV = 48° and m∠SVR = 54°, explain how you can find the measure of ∠TUV. Show all steps of your wo

const2013 [10]

Opposite angles in a parallelogram have equal measure.

The measure of angle TUV is 78 degrees

The given parameters are:

$\mathbf{\angle SRV = 48}$

$\mathbf{\angle SVR = 54}$

Start by calculating angle RSV.

$\mathbf{\angle RSV + \angle SVR + \angle SRV = 180}$ --- angles in a triangle

So, we have:

$\mathbf{\angle RSV + 54 + 48= 180}$

$\mathbf{\angle RSV + 102= 180}$

Subtract 102 from both sides

$\mathbf{\angle RSV = 78}$

Angles RSV and TUV are corresponding angles.

So, we have:

$\mathbf{\angle TUV = \angle RSV = 78}$

Rewrite as:

$\mathbf{\angle TUV = 78}$

Hence, the measure of angle TUV is 78 degrees

Read more about parallelograms at:

brainly.com/question/12186483

4 0

3 years ago

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A radioactive gas with a half-life of 2.4 days accidentally leaks into a room. If the radiation level is now 25% above a safe am

Gnom [1K]

Radioactive half-life is the time it takes for half an amount of radioactive material to decay into something else. In this case, it is assumed that the decay product is not radioactive or otherwise hazardous.

We must use the radioactive decay formula to determine at what time the radiation reaches a safe level.
A = Ao[e^(-0.693)(t)(t 1/2) where t 1/2 is the half-life, t is elapsed time, Ao is the original quantity, A is the future quantity.

We are given a half-life of 2.4 days , an Ao of 1.25 and an A of 1.00:

1.00 = (1.25)e^(-0.693)(2.4)t
1.00/1.25 = e^(-1.6632)t
0.8 = e^(-1.6632)t
t = 0.135 days = 3 hrs 15 min

This is the amount of time to a "safe level" using only radioactive decay, not venting or other means.

8 0

3 years ago