redhead7
redhead7
16-06-2017
Mathematics
contestada
Explain why !!? Please answer!?
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LammettHash
LammettHash
16-06-2017
Equality doesn't hold because expanding the left side yields
[tex](y-7)^2=(y-7)(y-7)=y(y-7)-7(y-7)=y^2-7y-7y+49=y^2-14y+49[/tex]
while the right side is missing the linear term [tex]-14y[/tex].
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