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I am a professionally qualified mechanical engineer. I have worked in the manufacturing sector and the modern dairy industry for ten years. I have been working in the education sector for a year and a half now which is my true passion. I want to inculcate in my students a want to endear on mission as to question 'why' to everything and then try to quench their thirst for that quest through self evolved thinking and learning capability. Due to my educational and work background, I have a broad perspective on things and try to make the basic concepts clear to students citing examples who can then apply these to tackle a wide variety of problems. I am apt to discuss / teach math, physics, reasoning and mat from classes 6th to 10th.

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Arjun Veer Singh
Posted on Sep 29, 2014 11:31 AM

An interesting mathematical concept which very few of us question and just accept it as a very basic fact - Why is a negative number multiplied by a negative number yield a positive result. Prove it mathematically.

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Suraj Kumar
Posted on Mar 11, 2015 12:55 PM

(-1) (1 + -1)= (-1)(0)=-1(1) + (-1) (-1) = 0 = -2. OOPS. So, - & - has to be +

Shankha Subhra Sarkar
Posted on Oct 07, 2014 5:56 AM

shankha subhra sarkar: sir this question can be proved like: 3*-3=-9 2*-2=-4 1*-1=-1 0*0=0 -1*-1=1 -2*-2=4 -3*-3=6 so sir if we follow this pattern we can get a prove. moreover it can be proved with the help of distributive property.

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