You made an error in example 5.....After expanding the brackets you should have gotten 14x^4 - 8x^2 + 21x^4 - 4x^2 + 105x^2 - 20 = 35x^4 + 93x^2 - 20......I love the way you make it so simple. Keep up the great work....
How great....I learnt this in 21 minutes from your video but couldn't do it in 2 months when my teacher taught it to me💀 I appreciate it allot thank you.
The lesson of bearing that you spoke about is great i am able to gain a better understanding but could u elaborate on the last section of the video where u spoke about SINE plz and ty