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
wolverine [178]
3 years ago
15

Determine the roots of p(x)=3(x+1)^4-5(x+1)^2+1"Show your work"

Mathematics
1 answer:
vaieri [72.5K]3 years ago
3 0
p(x)=3(x+1)^4-5(x+1)^2+1=3\left[(x+1)^2\right]^2-5(x+1)^2+1\\\\\text{subtitute:}\ (x+1)^2=t\geq0

p(t)=3t^2-5t+1\\\\p(t)=0\iff3t^2-5t+1=0\\\\a=3;\ b=-5;\ c=1\\\\\Delta=b^2-4ac\to\Delta=(-5)^2-4\cdot3\cdot1=25-12=13 > 0\\\\\sqrt\Delta=\sqrt{13}\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-(-5)-\sqrt{13}}{2\cdot3}=\dfrac{5-\sqrt{13}}{6} > 0\\\\x_2=\dfrac{-(-5)+\sqrt{13}}{2\cdot3}=\dfrac{5+\sqrt{13}}{6} > 0

(x+1)^2=\dfrac{5-\sqrt{13}}{6}\ \vee\ (x+1)^2=\dfrac{5+\sqrt{13}}{6}\\\\x+1=\pm\sqrt{\dfrac{5-\sqrt{13}}{6}}\ \vee\ x+1=\pm\sqrt{\dfrac{5+\sqrt{13}}{6}}

Answer:\\\\\boxed{x\in\left\{-\sqrt{\dfrac{5-\sqrt{13}}{6}}-1;\ -\sqrt{\dfrac{5+\sqrt{13}}{6}}-1;\ \sqrt{\dfrac{5-\sqrt{13}}{6}}-1;\ \sqrt{\dfrac{5+\sqrt{13}}{6}}-1\right\}}


You might be interested in
What is (8m^7 - 10m^5) / 2m^3 ?
Colt1911 [192]
4m^4-5m^2

Basically you divide each term by the denominator
this is akin to splittting fraction. Just as you can add 2/5 and 4/5 to get (2+4)/5, like wise you can split apart fractions. By doing this, you get two fractions and you can evaluate them individually
7 0
3 years ago
Read 2 more answers
Shannon rolls two number cubes, each numbered one through six. She observes the numbers facing up on each number cube and finds
Natali5045456 [20]

<u>starting with 2 cubes that have 6 numbers total for each one, so 2 cubes will have 12 numbers total, and the probability of number 5 is 2/12 (because each cube has a number 5, so two cubes will have 2, and fraction for it will be 2/12).</u>

5 0
2 years ago
Read 2 more answers
What is 1 - 27/44 = in its simplest form?
zloy xaker [14]
1 - \frac{27 }{44}=\frac{44}{44}-\frac{27 }{44}=\frac{17 }{44}


8 0
3 years ago
Read 2 more answers
Which equation could have been used to create this table? need answer fast
ludmilkaskok [199]

Answer:

y=6x

Step-by-step explanation:

Each value for y is can be divided by 6 for the value of x

7 0
2 years ago
Read 2 more answers
What is the image of the point (3, 2) after a rotation of 90° counterclockwise about the origin?​
GarryVolchara [31]
(-2,3). When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x).
7 0
3 years ago
Other questions:
  • A purse contains $2.95 in quarters and dimes. The number of quarters exceeds the number of dimes by 2. Find the number of quarte
    15·1 answer
  • What can go to 51 and 102
    11·2 answers
  • The temperature outside an airliner was -50 f this was 110 degrees f less than the temp in the ground write an equation to repre
    9·1 answer
  • Distances in space are measured in light-years. The distance from Earth to a star is 4.1 × 1013 kilometers. What is the distance
    7·2 answers
  • What’s the inverse equation? And how you solved it step by step please!
    8·1 answer
  • Solve xy-6=k for x<br> What is x?
    15·2 answers
  • Sally buys a large drink every day for a full year (365 days). Each drink costs $2.82. Sally always pays $3.00 and drops her cha
    11·1 answer
  • A 9 foot ladder is placed 4 feet from the base of a building.about how high does the ladder reach
    15·1 answer
  • 3/5 of the pupils in Year 9 say their favourite colour is red.
    11·1 answer
  • Solve for y in terms of x.<br> 4y - 2=3(2x + 3y)<br> y=
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!