Rational Expressions - Division. The REASON Most can’t do this is Because of THIS! 

This one took me some minutes, and I like that: ( 4a - 8 ) / 15a x 5a² / ( 3a - 6 ) = ( 20a³ - 40a² ) / ( 45a² - 90a ) = ( 4a² - 8a ) / ( 9a - 18 ) = 4a . ( a - 2 ) / ( 9 . ( a - 2) ) = 4a / 9

You are going to have known factoring in everything moving forward Algebra 1 and 2 Geometry , Trigonometry, and Calculus This skill HAS to become mastered.

Enjoyed your video.

I like trying to do problems like this in my head because it really helps concentration. Obviously I get 100% of them right if I have a piece of paper.

got it after all the factoring. thanks for the fun.

Would it be incorrect to reduce it to 2√a/3 ?

That salsa line cracked me up and i don't know why lol

Factoring indeed! What I need is to remember the tools and when to apply them.

The solution looks good and simple. But I really needed the teacher on this one. :(

[(4a -8) / 15a] * [5a²/(3a-6)] First fraction: (4a -8) / 15a Numerator: 4(a - 2) Denominator: 15a New fraction: [4(a-2)] / 15a Second Fraction: 5a² / (3a - 6) Numerator: 5a² Denominator: 3(a - 2) New Fraction: 5a² / [3(a-2)] Problem becomes: [[4(a - 2)] / 15a] * [5a² / [3(a-2)] Reductions: 5a² and 15a can reduce down to a and 3 you can also cancel out (a-2) (4/3) * (a/3) Final Solution: 4a/9 Super simple my students learn this roughly in the first half of their 7th school year. If trying to follow my explanation sorry it is so convoluted by the limitations of computer typing.

I came up with 4a/9.

4a / 9

A tremendous amount of words and drawing of happy/sad faces for math.

Fractions 101 => fraction.1 ÷ fraction.2 = fraction.1 × (1/fraction.2) here fraction.1 = (4a-8)/15a fraction.2 = (3a-6)/5a^2 1/fraction.2 = 5a^2/(3a-6) (4a-8)/15a×5a^2/(3a-6) =(4a-8)/(3a-6) × 5a^2/15a =4(a-2)/[3(a-2) ]× a/3 =(4/3)×(a/3) =4/(9a) verify... left for later❤

I can't believe I got it right!

20a/45= 4a/9

Did it in my head - 4/a.

New Year’s resolution

In my day

Lost me at factoring. 🥺

To much talk

What proof do you have to show that most cannot do this? Why do you keep saying this?

4a/9