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.

Пікірлер: 23

  • @nona8179
    @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

    @Greenemath

    5 ай бұрын

    You are very welcome!

  • @ranbirssingh
    @ranbirssingh7 ай бұрын

    Sir, u saved my life

  • @Greenemath

    @Greenemath

    7 ай бұрын

    I'm glad to hear the video was helpful!

  • @itashiro_furosu
    @itashiro_furosu2 жыл бұрын

    4:58 for this one what do you do in the numerator?

  • @Greenemath

    @Greenemath

    2 жыл бұрын

    You are finding the LCD, so we just look at the denominators.

  • @pinheadlarry9461
    @pinheadlarry94613 жыл бұрын

    Super concise and helpful

  • @Greenemath

    @Greenemath

    3 жыл бұрын

    Glad it was helpful! Thanks for the nice comment 😎

  • @sweetbutcliche7965
    @sweetbutcliche79657 ай бұрын

    9:55 I don’t understand how do we get the answer of the number in the middle

  • @Greenemath

    @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
    @adityaanand9465 Жыл бұрын

    Sir I want the video where you add these terms

  • @Greenemath

    @Greenemath

    Жыл бұрын

    kzread.info/dash/bejne/i55rlsOFnsXbdNY.html

  • @ruqaiyatalpur3188
    @ruqaiyatalpur318810 ай бұрын

    Thankyouu it really helped❤

  • @Greenemath

    @Greenemath

    10 ай бұрын

    Glad it helped!

  • @emmanuelwatss4726
    @emmanuelwatss4726 Жыл бұрын

    Sir i know this so late but is the answer of 1/2x + 2/4×=12?

  • @Greenemath

    @Greenemath

    Жыл бұрын

    What are your steps so far?

  • @emmanuelwatss4726

    @emmanuelwatss4726

    Жыл бұрын

    @@Greenemath uhmm my lcd is 4x but when i do the checking the answer is wrong

  • @Greenemath

    @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.

  • @carlosuno9491
    @carlosuno94912 жыл бұрын

    i search the wrong thing lol im looking for the PQF the lenses

  • @Greenemath

    @Greenemath

    2 жыл бұрын

    1/f = 1/p + 1/q

  • @joaquinsebastian662
    @joaquinsebastian6624 жыл бұрын

    Ok weak

  • @Greenemath

    @Greenemath

    3 жыл бұрын

    Cartman has entered the room :)

  • @BlazingDogePlayzRBX

    @BlazingDogePlayzRBX

    8 ай бұрын

    ​​@@Greenemaththis was really helpful, this is the only thing found