bhargavisingh bhargavisingh

19-09-2020
Mathematics

contestada

What must be added to
2x² - 3 xy + 5yz to get x² - xy + y²

Respuesta :

mhanifa mhanifa

19-09-2020

Answer:

-x² + y² + 2xy - 5yz

Step-by-step explanation:

"A" must be added to first expression to get the second one:

A + 2x² - 3 xy + 5yz = x² - xy + y²
A = ?

------------------------

A = x² - xy + y² - (2x² - 3 xy + 5yz) =
x² - xy + y² - 2x² + 3 xy - 5yz=
-x² + y² + 2xy - 5yz

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