alana62
08.10.2019 •
Mathematics
Find all real solutions of the equation, approximating when necessary.
x^3+4x^2=10x+15=0
Solved
Show answers
More tips
- H Horoscopes, Magic, Divination How to Cast a Love Spell on a Guy? Guide for Guys...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- F Food and Cooking The Disease That Haunted Abraham Lincoln...
- C Computers and Internet How to Get Rid of Windows Genuine Check?...
- H Health and Medicine How to perform artificial respiration?...
- S Style and Beauty Tricks and Tips: How to Get Rid of Freckles...
- C Computers and Internet How Do You Refill Cartridges?...
- A Auto and Moto Battle for the Relocation of The Cherkizovsky Market: Who Won?...
Answers on questions: Mathematics
- M Mathematics 3x+2/3y- 15 0 the point (x,9) is a solution for the inequality shown. What is a possible value for x. A. 2 B. 3 C. 4 D. 5...
- M Mathematics I need to prove WL = DC with two column proof....
- M Mathematics 250,255,260,265,270,275 as an explicit formula...
- M Mathematics What function equation is represented by the graph? f(x)=−52x+85 f(x)=−25x+4 f(x)=−52x+4 f(x)=−4x+85...
- M Mathematics Can someone please help me find the measures of the following arcs? I’m struggling more with part e but also the other parts! Please help ASAP!!! :(...
- M Mathematics Each of the 500 students at Celeste’s school is given one raffle ticket. Each student writes his or her name on the ticket and then drops it into a barrel. One ticket...
- M Mathematics The values that make the inequality v 4 true....
- M Mathematics What is the equation for the line of reflection? A. x = 3 B. y = 3 C. y = x D. x = 6...
- M Mathematics 2. In Ella s math class, there are 12 girls and 15 boys. Which of the following is the ratio of boys to girls in Ella s math class? A 12/27 B 12/15C15/12 D27/12...
- M Mathematics 3 * 4 * 5 * m * n you have to put it in standard form and i don t get it....
Ответ:
b.
Step-by-step explanation:
The given equation is;
We solve by the x-intercept method. We need to graph the corresponding function using a graphing tool.
The corresponding function is
The solution to is where the graph touches the x-axis.
We can see from the graph that; the x-intercept is;
(-2.426,0)
Therefore the real solution is:
Ответ:
b. x ≈ -2.426
Step-by-step explanation:
Given that we have possible roots we can replace these values into the equation and check if it is satisfied.
option a: 2.426^3+4*2.426^2+10*2.426+15 = 77.08 ≠ 0
option b: (-2.426)^3+4*(-2.426)^2+10*(-2.426)+15 ≈ 0
option c: 5.128^3+4*5.128^2+10*5.128+15 = 306.31 ≠ 0
option d: (-5.128)^3+4*(-5.128)^2+10*(-5.128)+15 = -65.94 ≠ 0
Ответ: