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otterhm
29.08.2021 •
Mathematics
If z^1/2 = x^1/2 + y^1/2 , prove that (x + y - z)^2 = 4xy.
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Ответ:
Make use of the fact that
.
Step-by-step explanation:
Start from the given:
.
In other words:
.
Square both sides of the equation:
Equality would still hold because:
Simplify:
Subtract
from both sides of this equation:
Subtract
from both sides of this equation:
Again, square both sides of this equation:
Ответ:
c c c c c c c c c
Step-by-step explanation: