skatedudeevan1pep08u skatedudeevan1pep08u
  • 07-09-2018
  • Mathematics
contestada


[tex](x - 7)(y - 9)[/tex]

Respuesta :

jcherry99
jcherry99 jcherry99
  • 07-09-2018

Remark

There are occasions where this is very handy to know. Use FOIL.

Solve

F: (First): x*y = xy

O: (Outside): x *(-9) = - 9x

I:(Inside): (-7)*y = - 7y

L:(Last): (-7)*(-9) = 63

Add the terms together

xy - 9x - 7y + 63   <<<< Answer


Answer Link

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