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c:26

400

（Sqrt（5））^（X+1）=125， 5^（（X+1）/2）=5^3， （X+1）/2=3， X=5

-1-1-1-1🎉🎉🎉🎉

What is going on😢 I don't get it

K=5

very ugly number handwriting

Simple 150

A long way to solve a simple equation!

2^(x)*5^(x)=10^(3) log(10^(x))=log(10^(3)) log(10)=1 log10^(3)=3 x*log(10)=3 x*1=3

Solution 1-) the solution of k^3 −k^2 =100 if we assume the dots means faktor of K. Solution 2-) if in "K.K.K" and "K.K" the dots are decimal points one solution could be given an interpretation of this equation as: 1. K.K.K as a number in the format K.KK, where K is some digit, and 2. K.K as a number with just one decimal place. Wich it result in (K+K/100+K/1000)−(K+K/10)=100

台灣 國中二年級數學

Thought 2^x • 5^x=100 lel

3.

pontosabban ennyi a végeredmény: 2^100-2^99=633825300114114700748351602688

I think thé answer IS --6

2^100-2^99=6,7^29

k^3 - k^2 => k^2(k-1) => k=5

15 x 16^4 es igual, pero queda más bonito y rápido

I use logic

Whether you like it or not, your answer is incomplete without the complex roots. So you can all stop congratulating yourself in the comments about how you figured out immediately that the answer was 5, because it’s not the whole answer.

5^x-1 = 5 × 2^x-2 5^x × 5^-1 = 5 × 2^x × 2^-2 5^x × 1/5 = 5 × 2^x × 1/2² 1/5 × 5^x = 5 × 2^x × 1/4 5^x/5 = (5 × 2^x)/4 4 × 5^x = 25 × 2^x 4 × (5/2)^x = 25 (5/2)^x = 25/4 (5/2)^x = (5/2)^2 X = 2

(ab*ca)/bc=(100*300)/200,a*a=150, a=√150=5(√6) the same, b*b=200/3,b=√(200/3)=10√(2/3)=10/3(√6) c*c=600, c=√600=10√6 then you can get a+b+c=55/3(√6)

a+2ab+b=8 -> {a+b)^2=8^2 -> a+b=+-sqrt(8)

You are blocked for not mentioning that the numbers were integers and wasted my time!

You can do that.

O K.

5

How about 4^x+4^x=16 2(4^x)=16 4^x=8 xlog4=log8 x=log8/log4 x=log2^3/log2^2 x=3log2/2log2 x=2/3

26

I did it in 3 seconds

😊

7/3

❤❤❤🎉 thank you 👍

Are you stupid?

C=26

worst, is the person dumb or he thinks viewers are all dumb

😮awesome 👌 ❤🎉

this guy would not have made it imtui Harvard, he couldn't do 16^4 * 15? really?

X=3

1+25=26

Did you make this quetion by yourself?, If yes, you made math less intetestimg.

I solved it in my mind. k=5

It so easy for me. It s your easy exercise. 😂. I like complex exercise

16^4 (16-1) = 256x256 x15

I solved it suddently thinkig which square could be added to 100 to have a cube

2 in R.

lg7/lg2.

The bases are different so 3x-7=0😊

superb