Dear Andy, if I were in your shoes I would definitely try factoring method first. If factoring not feasible, then go for Quadratic Formula. However, Completing square method is a very powerful tool used in applications! Thanks for asking😀 I'm sure you are a brilliant and bright student 👍 Please keep sharing my channel with your family and friends. Take care dear and all the best😃
With respect, calculate the discriminant first. That will tell you if: --- it can be factorised (the discriminant will be a numerical perfect square), or not, or --- if the quadratic is a perfect square ( ie b^2 - 4ac = 0), or not . Completing the square on 10x^(2) + 13x - 3 = 0 is unnecessarily difficult/complex, since the quadratic can be factorised.
if you don't like me , it's not my problem, and i don't care, Now you are thinking why am i saying this here , why am i ?, i really don't care ! ( :~(})
i learn this 35 years ago from a classroom but understand nothing. by now, after watched this short video make me fully understand it is not too hard indeed, thank you Sir.
I didn't think I would ever understand how to use the quadratic formula until I found this video, thank you for explaining it so well, it's not easy but this is where you understand the concept and then work from there to make it easier for yourself, practice makes things better.
I am glad there are now many easy ways to solve for the trinomial, good for the students . But actually, in real life, this kind of math is of no use! Actual situations are much more easy if one just have a common sense!
I think the simplest way by some margin is to multiply 10 by -3 the find the 2 factors of 30 that combine to make 13, ie 2 and 15, giving (x - 2)(x +15) now, the clever bit is just to divide the 2 and 15 by the 10 , simplify and allocate the denominators to the x terms giving (5x - 1)(2x + 3). There is a YT clip on this.
Can all 3 methods be used for any quadratic trinomial? It looks like if you have a quadratic binomial (3rd term is zero) completing the squares is the only way to go, correct?
An explanation is meant to EXPLAIN what you are doing, i.e. TO SAY WHY you do it (thus to enable your viewers to execute the procedure alone). What you do here is to show that you can do it. That's not what we want to know. So it's a bad explanation!
The leading coefficient does NOT have to be 1. That is false. In fact, it is easier to complete the square in this case by multiplying through by 40 (thus avoiding fractions). So 400x^2+520=120 , now our first coefficient is also a perfect square (20x)^2 and the 2nd coefficient is an even number. So (20x +13)^2=289 Easy.
THANK YOU VERY MUCH SIR . THE 3RD METHOD WAS BIT DIFFICULT TO ME . I GUESS IM GONNA USE THE FIRST 2 METHODS IN THE EXAM. ANY WAY THANKS AGAIN FOR THE GREAT VIDEO
So nice of you Garbriel! You are an awesome 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and all the best😃 Have a very happy and blessed New Year!
You're very welcome Aftab! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Mashallah baby thumbnail is so cute 😀
So nice of you Makwanya! You are awesome 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and stay blessed😃
cmon man no need to leave stuff like this, he can't help that he has problems with speaking. He's still learning like u are w math. At least be grateful he's trying to teach us even tho he struggles with explaining if u don't like the video just leave then no need to put out this type of comment
