No bro it is in the 2nd last line by square rooting we get 2 results +ve and -ve but here we only consider +ve result considering -ve result we get 2+2=4 which is true with our consideration
I was talking about the 3. line. XD
The 3. line is wrong. Maybe a typing error or something. Cause I thing a mistake in the 3. line was not your point. But there is one.
Haha I see.
But the first mistake is the important one. Because = is a relation and you are not allowed to make with wrong arguments new steps from the math point of view.
No bro it is in the 2nd last line by square rooting we get 2 results +ve and -ve but here we only consider +ve result considering -ve result we get 2+2=4 which is true with our consideration
4-9/2= -0.5 after powering it become 1/4 and after taking the root it is 0.5. 0.5 +9/2 =5
We have to take
√(5-9/2)^2+9/2=-5+9/2+9/2=-5+9=4
Clear??
I was talking about the 3. line. XD
The 3. line is wrong. Maybe a typing error or something. Cause I thing a mistake in the 3. line was not your point. But there is one.
Yes this is the trick but if you use √1/4=-1/2 then-1/2+9/2=4
So your view and my view is the same but in different lines
Haha I see.
But the first mistake is the important one. Because = is a relation and you are not allowed to make with wrong arguments new steps from the math point of view.