Sagot :
Answer:
a² + 2am - 2ay + m² - 2my + y²
Step-by-step explanation:
[tex]\rm (m + a - y)(m + a-y)[/tex]
[tex]\hookrightarrow \rm m(m+a-y) + a(m+a-y) - y(m+a-y)[/tex]
[tex]\hookrightarrow \rm m^2 + am - my + am + a^2 - ay - my - ay + y^2[/tex]
[tex]\hookrightarrow \rm m^2 + 2am - 2my + a^2 - 2ay + y^2[/tex]
[tex]\hookrightarrow \boxed{\rm a^2 + 2am - 2ay + m^2 -2my + y^2}, \textsf{when re-arranged alphabetically}[/tex]
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