![danquanc958719](/avatars/2575.jpg)
danquanc958719
20.01.2020 •
Mathematics
Ihave to solve x^2-6x+8=0 by factoring, quadratic equation, and completing the square. i did this and got different answers for all of them. me understand how to solve using each of the ways.
Solved
Show answers
More tips
- F Family and Home 5 Tips for Choosing Toys for Your Child...
- L Leisure and Entertainment How to Find a Phone Number by Address: The Ultimate Guide...
- P Philosophy How to Properly Create a Vision Board?...
- C Computers and Internet What is Web 2.0 and How Does it Work?...
- S Style and Beauty Is Photoepilation the Solution to Unwanted Hair Forever?...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
Answers on questions: Mathematics
- M Mathematics Help me please please dont answer if you don’t know i will also give brainliest...
- M Mathematics The sum of 5 times a number and -7, added to 9 times the number...
- M Mathematics Are triangles DEF and LNM similar if DF = 8 and LM = 4?triangles LNM and DEF with angles N and E marked with the right angle symbol Yes, by the SAS Similarity Postulate Yes, by the...
- M Mathematics Jade makes half a liter of lemonade. She pours 1/10 liter of lemonade into each glass. How many glasses is Jade able to fill?...
- M Mathematics In the Internet, the TCP/IP protocol suite is used for transmitting packets of information. The receiving TCP entity checks for errors. If an error is detected, it requests retransmission...
- M Mathematics If tan @ = then what is sin ?...
- M Mathematics Resuelve los siguientes problemas, no olvides que todo punto debe ir acompañado de su respectivo procedimiento 1. Grafica las siguientes rectas a. y = 2 b. y = −2 c. y = ¾ d. y = 0...
- M Mathematics Does anyone know this?...
- M Mathematics Example 3: The sum of three numbers in an A.P. is 12 and the sum of their cubes is 408. Find them....
- M Mathematics Work out the perimeter in semicircle take π to be 3.142 and Write down all of the digit given buy your calculator...
Ответ:
First, we'll factor:
x^2 - 6x + 8 = 0
(x - 4)(x - 2) = 0
x = 2, 4
Simple enough, right? Let's complete the square next:
x^2 - 6x + 8 = 0
x^2 - 6x = -8 <<First, I subtracted 8 to the other side to make room for the new c term)
x^2 - 6x + 9 = 1 <<Then, I found the new c by doing (b/2)^2, thus completing the square. This meant (-6/2)^2 which is 9, so I added 9 to both sides.
(x - 3)^2 = 1 <<Next factor the left side.
x - 3 = plus or minus 1 <<Take the square root of both sides.
x = 3 + 1, 3 - 1 << Add over the 3
x = 4, 2
There we go, same as the factored answers! Now let's do the quadratic formula.
x = -(-6) plus/minus sq rt (-6^2-4*1*8) / 2
x = (6 plus/minus sq rt (4)) / 2
x = (6 plus/minus 2) / 2
x = 2, 4
So, your values for x are 2 and 4. Hope this helped!
Ответ:
boston
Explanation:
because