kharmsorz
Don’t use Pascual triangle when involving large expansion because it only shows the coefficients and you can’t see the appropriate term as well. The worse thing is that it is very time consuming to build coefficients that form triangle
kharmsorz
Excuse me, there is correction of the expansion term in letter b which is (x² + 2y)⁴ = x⁸ + 8x⁶y + 24x⁴y² + 32x²y³ + 16y⁴ I have asked the moderator so that I can edit and update my answer for that image soon. Thank you for your understanding. I’ve also scrutinized other items and they are okay, no mistakes.
alfredalba018
but the formula is correct, the final answer is the only mistake?
kharmsorz
Yes only in letter b. I got some mistakes of the power/exponent in the expansion form of the final answer
alfredalba018
hello post it the answer to my other questions (prove by PMI and indirect proving) until February 28.
kharmsorz
The answers will be posted on Sunday morning because I’m currently on duty even Saturday. I’m done answering them but need to write it neatly.
Answers & Comments
See the attached images.
(x² + 2y)⁴
= x⁸ + 8x⁶y + 24x⁴y² + 32x²y³ + 16y⁴
I have asked the moderator so that I can edit and update my answer for that image soon. Thank you for your understanding. I’ve also scrutinized other items and they are okay, no mistakes.