TSTEACHERS BADI
✍ 4×3=12 is 4+4+4=12 or 3+3+3+3=12 ?
👉 Explaination
4×3=12 read as 4 3times =12. (4+4+4)
Similarly 4×2=8 read as 4 2times=8. (4+4)
If so then 4×0=0 should be read as 4 0times=0.(?)
Here it is not possible to write 4 zero times. Merely its impossible. So 4×3=12 is not correct to show as 4+4+4=12.
✍Reality
4×3=12 read as 4times 3 =12.(3+3+3+3)Similarly 4×2=8 read as 4times 2 =8.(2+2+2+2).
Similarly 4×0=0 read as 4times 0 =0.(0+0+0+0)
Here we can show 0 to any number of times.
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In Simple way
4×5=20 (4+4+4+4+4)
4×4=16 (4+4+4+4)
4×3=12 (4+4+4)
4×2=8 (4+4)
4×1=4 (4)
4×0=0 (? ) how can we show 4 zero times.?
So its wrong.
4×5=20 (5+5+5+5)
4×4=16 (4+4+4+4)
4×3=12 (3+3+3+3)
4×2=8 (2+2+2+2)
4×1=4 (1+1+1+1)
4×0=0(0+0+0+0)
We can show 0 to 4 times equals to 0.
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✍ *Why is -(-a)=a?*
We know that any number plus its opposite is zero. So let's begin there:- 1 + (-1) = 0
(-1) [ 1 + (-1) ] = 0
Now
(-1)(1) + (-1)(-1) = 0
But (-1)(1) = (-1) because of identity (any number times 1 is itself), so
(-1) + (-1)(-1) = 0
Now we add one to both sides and simplify
1 + (-1) + (-1)(-1) = 1
(-1)(-1) = 1
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*Another simple way*
-A+A=0 ------------1
Let -A =B assumption
Now form equation 1
B+A=0
Move B to right hand side
A= -B
Now substitute B value
A=-(-A)
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If any viewer finds the proof is wrong pls comment. Even they can send the correct proof to my mail.I will post it with their name.
Thank you
