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100012-99992

 Nov 17, 2021
 #1
avatar+391 
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Hello Guest,

 

10001²-9999²

 

You can solve this by our homepage - click on HOME  - {https://web2.0calc.com/}

 

This answer shouldn't be answered, but the solution is 40,000.

 

Hope that was helpful. ^^

 

Straight

 Nov 17, 2021
 #2
avatar+32741 
+2

You should be able to recognise this as the difference of two squares:  a2 - b2 = (a+b)*(a-b)

Here, a = 10001 and b = 9999, so this is actually easy to calculate in your head.

 Nov 17, 2021
edited by Alan  Nov 17, 2021

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