Adding two basic rational expressions by determining the LCM

Learn how to add and/or subtract rational expressions. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. When adding or subtracting rational expressions we first obtain the lowest common multiple (LCM) of the denominators and then multiply each numerator with the factor which when multiplied to the denominator gives the obtained LCM.

After we have transformed each of the rational functions to have the same denominator, we then add/subtract the numerators to obtain the required sum/difference of the original rational expression.
#rationalfunctions #addsubtractrationalexpressions

[zxcvbnmaw]

Never was tought how to do this, teacher just expected us to know

[thatsabitcringe]

Teachers just expect you to know this since you did it with numbers lmao

[denzelabarca]

I LOVE YOU SIR FROM THE PHILIPPINES! HAHAHAHAHAHAH

[mdshaiel]

I really like your method very simple thanks sir__ love from india 🇮🇳 🇮🇳

[precshez]

Sir then we could just multiply the denominator it would be x²+20

[moizzahmad]

How can the teacher expected us to know that. I once asked him the method of explanation, whole class laughed at me.

[arhamsajid]

Sir you are the best now after 9 years i know how to take lcm

[cp]

Damn it i always forget how to take lcm thanks and love from Pakistan 🇵🇰 SIR!

[Archew]

What's the LCM of (x-1) & (x+2)

[vishuchoudhary]

Lol iam seeing this video after 8 e
Years