-20 = -20 16-36= 25-45 16-36 +(9/2)= 25-45 +(9/2) (adding 9/2 on - Maths - Playing with Numbers

Question

-20 = -20
16-36= 25-45
16-36 +(9/2)= 25-45 +(9/2) (adding 9/2 on both sides)
(4-9/2) (4-9/2)= (5-9/2) (5-9/2) (by a-b whole square
formula)
4=5 (-9/2 = -9/2 )
where 4 is not = 5 find out mistake

Sunanta Meitei · Accepted Answer

Dear user!
You can find the mistake from
the explanation given below
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/userimages/mn_images/image/mis%20png">
Cheers!

-20 = -20 16-36= 25-45 16-36 +(9/2)= 25-45 +(9/2) (adding 9/2 on both sides) (4-9/2) (4-9/2)= (5-9/2) (5-9/2) (by a-b whole square formula) 4=5 (-9/2 = -9/2 ) where 4 is not = 5 find out mistake

-20 = -20

16-36= 25-45

16-36 +(9/2)= 25-45 +(9/2) (adding 9/2 on both sides)

(4-9/2) (4-9/2)= (5-9/2) (5-9/2) (by a-b whole square formula)

4=5 (-9/2 = -9/2 )

where 4 is not = 5 find out mistake