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I try and try to listen to your video but you go off on a tangent too much. Six minutes into the video and you have not begun solving yet. Would love to learn from you but you just talk and talk and talk and ...................................
I eliminated the denominators and went straight to the quadratic formula, all in my head and it took max 20 seconds...
Keep the videos to 5 minutes maximum. I like learning but 16-18 minutes bores me so I have stopped watching/learning.
You expand 30 second problems MAX into a 20 minute video all the time
You drag it out too long.
To add fractions you need a common denominator like you were taught in 7th grade. To do this make the common denominator 4 * x. Then multiply each term by one to get (x/4 * x/x) + (8/x * 4/4) = 3 to get the equation (x^2 + 32) / 4x = 3 . Then multiply both sides by 4x to get x^2 + 32 = 12x and put equation in standard form of x^2 - 12x +32 = 0 . Then factor to (x - 4)*(x - 8) = 0 to get the answer of 4, 8. There is no need to find the lowest common denominator or to multiply the whole equation my some magic LCD of 4*x*1.
I eyeballed it at 4. When you said 2 answers I paused and double checked that 8 would also work.
Hi, I'm 75 but still wamt to learn. I was always intimidated by math so I'm trying to conquer my fear. Thank you. Judy from Birmingham
Please ignore the incredibly rude, arrogant comments!! You are providing the understanding behind the methods used to solve problems. That is what I never got! I'm not here to simply get the right answer; I'm here to get truly educated on how math actually works! So thank you for giving the details! 😊
Keep in mind this guy is EXPLAINING the math to the audience, not just showing them how quick he can do it. I think he's doing an awesome job.
The answer is x=4 and/or x=8. It's simple by doing it in steps. The first step is subtract 8/x from each side of the equation, so x/4 = 3 - 8/x The next step is to multiply both sides by 4 so x = 4(3 - 8/x) or 12 - 32/x Then multiply each side by a factor of x. X^2 = 12x - 32 Then isolate the equation to one side. X^2-12x+32=0 This factors out to (x - 4)(x-8)=0 or x=4 and/or x=8
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I went to sleep and woke back up and he still ain’t start on the problem yet 😂😂
I'm using my YouTube Premium subscription to learn freestyle swimming, math, Hungarian, Greek, Mandarin Chinese, and other things. But being 72 years old I want each episode to be as succinct as possible without unnecessary talk
I had 2 years of math back in the 50s !. I’m so glad the way I learned algebra was not as complicated. I resolved this problem in seconds.
Thank you for your service. I was denied the honor in 1976 due to being an Epileptic, but so grateful to those that can and do
Yes it is x=4 and x=8 both work, took me 2 minutes in my head. Step 1 common denominator (4x) x^2/4x +8(4)/4x = 3. Step 2 multiply both sides by 4x, x^2 + 32 = 3(4x) then x^2 + 32 = 12x. Step 3 subtract 12x from both sides x^2 - 12x + 32 = 0. Step 4 factor (x - 4)(x - 8) = 0. Step 5 solve for x in each set x - 4 =0, x - 8 =0. Step 6a add 4 to each side in x - 4 = 0 x - 4 + 4 = 0 + 4, x=4 Step 6d add 8 to both sides in x - 8 = 0, x - 8 + 8 = 0 + 8 x=8 Step 7 test results by substituting results in origional equation. A. 4/4 +8/4 = 3 1 + 2 = 3, 3 = 3,B. 8/4 + 8/8 = 3, 2 + 1 = 3, 3 = 3. Conclusion both 8 and 4 are solutions for x.
I died of old age watching this video 😆
Isn’t it 4 without even any solving? 😂😂
No need for complicated algebra. Use cross reduction and you get 1+2=3. The X’s cancel each other out, 4 and 8 a divisible by 4 leaving you with 1 over 1 and 2 over 1.