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Google's doodle for Teachers Day-September 5

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V

vgane

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Like this doodle!

teachers-day-2015-india-5120679074594816-hp.gif
 
Guess, the answer to the second equation of 10 to the power of -10 + 5 should be 5 and not as indicated in the doodle!

Google-Doodle-Teachers-Day-624x351.png
 
Lalit said:
Guess, the answer to the second equation of 10 to the power of -10 + 5 should be 5 and not as indicated in the doodle!

Google-Doodle-Teachers-Day-624x351.png
Click to expand...
Instead of taking 10 to the RHS, the student is subtracting 10 from each side and that is it!

It is not 'To the power of ' , as you guess it to be!! :)
 
We were taught to take numbers from LHS to RHS and vice versa.

If 5x = 5 , we solve by leaving only x in the LHS and take 5 to RHS to get 5 divided by 5.

Now the new method seems to be dividing both sides by 5! Appears weird! :D
 
Lalit said:
Guess, the answer to the second equation of 10 to the power of -10 + 5 should be 5 and not as indicated in the doodle!
Click to expand...

It is shown as 15[SUP]-10[/SUP] which is =5. Hence there is no error there..It is a convoluted way of solving
 
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