A beautiful Olympiad Exponential Trick | 9^900 - 9^901

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[@richardmullins44]

-8 * 9^900 = - 2^3 * =3^ 1800 = - (2 X 3^600)^3. It's all a mattter of trying to guess what answer the marker prefers. I agree with beautiful mind, but I have no resonance at all with these tests. Let me ask open ai. It says the answer is -8 x 9^900. I'll go with that.

[@ei9896]

9^900×[1-9]=-8×9^900

[@Psykolord1989]

Before watching:
So, this is a fairly easy problem. 9^900 - 9^901 = (9^900)(1-9) = -8(9^900).
By and large, teachers won't require you to try and simplify further.

[@MrBmarx]

(-2.3^300)^3 that’s the best way to give the solution.

[@MichaelMoore99]

I got to the point of 2:17 in about 3 seconds in my head, but I was stuck on how to go any further other than just multiplying it out.
However, one thing you could do is take that ^3 and factor it out, since 1800 is divisible by 3. ((3^600)*2)^3

[@anthonyvalenti9093]

What? Answer -8x 9^900

[@user-Zi9]

It's very simple.

[@吳昶霖]

（-8）×9^900

[@khaledalsaoub6760]

Great

[@Mythrych]

I mean sure, it issolved that way, but what's beautiful about it? You are given two big numbers, you substract and get one number, that's still big.

[@atikulkabir7900]

What if we use log?

[@beautifulmindinpuzzles7716]

What a poor method and what a poor answer.

[@chaihaohung6792]

Just want to show us how to use power rule？？

[@Dddaggg]

何がしたいんだろう？

[@ParalyticAngel]

A calculator which can calculate 900 in the exponent is not intvented yet.^^

[@OmPrakashMishra-nz2qp]

The answer will be (-9).

[@prince2567]

又一個不喜歡計算憑直覺猜答案的，用代數法令9^900=x,帶入可得答案為-8x

[@MsRomanFed]

He did not solve the task. Dont spend time

[@nahumbaskin1883]

-8

[@denisdamazio]

What a annoying answer

[@ОлегМехов-в6р]

Глуповатые задачи с примитивными решениями

[@SidneiMV]

9⁹⁰⁰(1 - 9) = -8¹9⁹⁰⁰ = -2³9⁹⁰⁰ = -(2¹9³⁰⁰)³

[@BP-gn2cl]

Third class teacher

[@malasengupta8670]

Bad method.

[@zakzakzak3345]

Блин, ну зачем тат подробно? Да ну тебя, достал подробностями. Не буду больше тебя смотреть.

[@Archik4]

А где ответ в этом видео?

[@Archik4]

В 9-значной системе счисления это выглядит как 10...0 (900 нулей) и минус 10...0(901 нулей). Это легко вычесть получим -8...8. Однако при попытке применить потом геометрическую прогрессию получишь то что было в начале задачи.

[@tungyeeso3637]

Where are you trying to take us?