Winzen07
08.01.2020 •
Mathematics
If a^1/2 + b^1/2 - c^1/2= 0 find (a+b-c)^2
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Ответ:
a½+b½-c½=0
a½+b½=c½
Squaring on both sides,
(a½+b½) ²=c½×²
a+b+2a½b½=c
a+b-c= -2a½b½
Again squaring on both sides,
(a+b-c) ²=(-2a½b½) ²
= 4ab.
Ответ:
You substitute the variables: -10+4+8=2