How to Find the LCD for a Group of Rational Expressions
www.greenemath.com/ / mathematicsbyjgreene In this lesson, we review how to find the LCD for a group of rational expressions.
Жүктеу.....
Пікірлер: 23
@nona81795 ай бұрын
You do not know how much you saved my ass from the embarrassment, I was about to get 0 in my quiz THANK YOU!
@Greenemath
5 ай бұрын
You are very welcome!
@ranbirssingh7 ай бұрын
Sir, u saved my life
@Greenemath
7 ай бұрын
I'm glad to hear the video was helpful!
@itashiro_furosu2 жыл бұрын
4:58 for this one what do you do in the numerator?
@Greenemath
2 жыл бұрын
You are finding the LCD, so we just look at the denominators.
@pinheadlarry94613 жыл бұрын
Super concise and helpful
@Greenemath
3 жыл бұрын
Glad it was helpful! Thanks for the nice comment 😎
@sweetbutcliche79657 ай бұрын
9:55 I don’t understand how do we get the answer of the number in the middle
@Greenemath
7 ай бұрын
You need the outer and inner to sum to -2x. 3x * -2 = -6x 4 * x = 4x -6x + 4x = -2x You are basically just doing FOIL in reverse. This is known as factoring by trial and error or reverse FOIL.
@adityaanand9465 Жыл бұрын
Sir I want the video where you add these terms
@Greenemath
Жыл бұрын
kzread.info/dash/bejne/i55rlsOFnsXbdNY.html
@ruqaiyatalpur318810 ай бұрын
Thankyouu it really helped❤
@Greenemath
10 ай бұрын
Glad it helped!
@emmanuelwatss4726 Жыл бұрын
Sir i know this so late but is the answer of 1/2x + 2/4×=12?
@Greenemath
Жыл бұрын
What are your steps so far?
@emmanuelwatss4726
Жыл бұрын
@@Greenemath uhmm my lcd is 4x but when i do the checking the answer is wrong
@Greenemath
Жыл бұрын
You have: 1/(2x) + 2/(4x) = 12 First off, you can reduce the fraction 2/(4x) since 2/4 = 1/2 1/(2x) + 1/(2x) = 12 You can now change 1/(2x) + 1/(2x) into 2 * 1/(2x) 2 * 1/(2x) = 12 2/(2x) = 12 Simplify 2/2 = 1 1/x = 12 At this point, you have a lot of options. Easiest to understand is cross multiply: 1/x = 12/1 12x = 1 x = 1/12 Check: 1/(2 * 1/12) + 2/(4 * 1/12) = 12 1/(1/6) + 2/(1/3) = 12 6 + 6 = 12 12 = 12 This tells us that 1/12 is the correct solution.
@carlosuno94912 жыл бұрын
i search the wrong thing lol im looking for the PQF the lenses
@Greenemath
2 жыл бұрын
1/f = 1/p + 1/q
@joaquinsebastian6624 жыл бұрын
Ok weak
@Greenemath
3 жыл бұрын
Cartman has entered the room :)
@BlazingDogePlayzRBX
8 ай бұрын
@@Greenemaththis was really helpful, this is the only thing found
Пікірлер: 23
You do not know how much you saved my ass from the embarrassment, I was about to get 0 in my quiz THANK YOU!
@Greenemath
5 ай бұрын
You are very welcome!
Sir, u saved my life
@Greenemath
7 ай бұрын
I'm glad to hear the video was helpful!
4:58 for this one what do you do in the numerator?
@Greenemath
2 жыл бұрын
You are finding the LCD, so we just look at the denominators.
Super concise and helpful
@Greenemath
3 жыл бұрын
Glad it was helpful! Thanks for the nice comment 😎
9:55 I don’t understand how do we get the answer of the number in the middle
@Greenemath
7 ай бұрын
You need the outer and inner to sum to -2x. 3x * -2 = -6x 4 * x = 4x -6x + 4x = -2x You are basically just doing FOIL in reverse. This is known as factoring by trial and error or reverse FOIL.
Sir I want the video where you add these terms
@Greenemath
Жыл бұрын
kzread.info/dash/bejne/i55rlsOFnsXbdNY.html
Thankyouu it really helped❤
@Greenemath
10 ай бұрын
Glad it helped!
Sir i know this so late but is the answer of 1/2x + 2/4×=12?
@Greenemath
Жыл бұрын
What are your steps so far?
@emmanuelwatss4726
Жыл бұрын
@@Greenemath uhmm my lcd is 4x but when i do the checking the answer is wrong
@Greenemath
Жыл бұрын
You have: 1/(2x) + 2/(4x) = 12 First off, you can reduce the fraction 2/(4x) since 2/4 = 1/2 1/(2x) + 1/(2x) = 12 You can now change 1/(2x) + 1/(2x) into 2 * 1/(2x) 2 * 1/(2x) = 12 2/(2x) = 12 Simplify 2/2 = 1 1/x = 12 At this point, you have a lot of options. Easiest to understand is cross multiply: 1/x = 12/1 12x = 1 x = 1/12 Check: 1/(2 * 1/12) + 2/(4 * 1/12) = 12 1/(1/6) + 2/(1/3) = 12 6 + 6 = 12 12 = 12 This tells us that 1/12 is the correct solution.
i search the wrong thing lol im looking for the PQF the lenses
@Greenemath
2 жыл бұрын
1/f = 1/p + 1/q
Ok weak
@Greenemath
3 жыл бұрын
Cartman has entered the room :)
@BlazingDogePlayzRBX
8 ай бұрын
@@Greenemaththis was really helpful, this is the only thing found