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-__y^2-[-5y-y(-7y-9)]-[-y(15y+4)]=0 please help I don’t know how to find the missing coefficient in the blank

Respuesta :

caylus

Hello,


if y≠0 then


[tex] ay^2-[-5y-y(-7y-9)]-[-y(15y+4)]=0\\

ay^2-[-5y+7y^2+9y]-[-15y^2-4y]=0\\

ay^2+5y-7y^2-9y+15y^2+4y=0\\

ay^2+8y^2=0\\

(a+8)y^2=0\\

a=-8





[/tex]

1rstar
Hey there !

Check the attachment.
Hope it helps :)
Ver imagen 1rstar

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