1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mariulka [41]
3 years ago
8

Prove

x+1)^{2}(x+2)=(x^3+3x+21x+1)" alt="(x+1)^{2}(x+2)=(x^3+3x+21x+1)" align="absmiddle" class="latex-formula"> no files
Mathematics
1 answer:
tekilochka [14]3 years ago
6 0

Answer:

LHS ≠ RHS

Step-by-step explanation:

LHS =\\\\=(x+1)^2 (x + 2) \\\\=(x^2 + 2x + 1)(x+2)\\\\=x(x^2 + 2x + 1) + 2(x^2 + 2x + 1) \\\\=(x^3 + 2x^2 + x ) + ( 2x^2 + 4x + 2) \\\\=x^3 + 2x^2 + x + 2x^2 + 4x + 2 \\\\=x^3 + 4x^2 + 5x + 2

You might be interested in
A car is driving northwest at vv mph across a sloping plain whose height, in feet above sea level, at a point nn miles north and
solong [7]
 <span>Northwest is 45 degrees north of west. If a car travels a distance x miles northwest, its northerly component gains x/sqrt(2) miles and its easterly component LOSES xsqrt(2)/ miles. 

Resultant height is h = 4500 + 100x/sqrt(2) - 75x/sqrt(2) = [25/sqrt(2)]x + 4500 
dh/dt = [25/sqrt(2)]dx/dt = [25/sqrt(2)]v </span>
7 0
3 years ago
Four friends equally share three candy bars. Which fraction represents how much each friends receives?
elixir [45]
Each friend would receive 3/4
8 0
3 years ago
Is square root 1-cos^2theta=-sintheta true? if so, in which quadrants does angle theta terminate?
oksano4ka [1.4K]

Yes it is true:

(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful

4 0
2 years ago
Find the exact value of cos(-pi/12)
dezoksy [38]

Answer:

0.96592 or 0.97

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
X = -2y + 300 3y = 800 - 4x
devlian [24]

Answer:

<h2>x = 140, y = 80</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}x=-2y+300&(1)\\3y=800-4x&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\3y=800-4(-2y+300)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\3y=800+(-4)(-2y)+(-4)(300)\\\\3y=800+8y-1200\\\\3y=8y-400\qquad\text{subtract}\ 8y\ \text{from both sides}\\\\-5y=-400\qquad\text{divide both sides by (-5)}\\\\y=80\\\\\text{Put it to (1):}\\\\x=-2(80)+300\\\\x=-160+300\\\\x=140

8 0
3 years ago
Read 2 more answers
Other questions:
  • When you reverse the digits in a certain two-digit number you increase its value by 27. find the number if the sum of its digits
    15·1 answer
  • What is 64cm2 converted
    8·2 answers
  • Lin read 44 pages in 132 minutes. Diego read 35 pages in 140 minutes. Who is reading at a faster rate, Lin or Diego? Show and Ex
    10·1 answer
  • If 35+(16x-8)+(2x+9)=180 what does x equal
    5·1 answer
  • Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the nu
    8·1 answer
  • Complete the table. (if u dont know how to do it then pls answer another question)
    5·1 answer
  • Please answer this question!
    9·1 answer
  • 3. Sophia starts a job at a restaurant. She
    12·1 answer
  • What is the solution of root 6 ÷ root 6
    5·2 answers
  • Pls help... Prove (1+tanx)/(1+cotx)=tanx by algebra
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!