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31-01-2020
Mathematics

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x=2y+5
y=(2x-3)(x+9)

Respuesta :

31-01-2020

y=(2x-3)(x+9)
y=(2(2y+5))(2y+5+9)
y=(4y+5)(2y+14)
y=8y^2+56y+10y+70
y=8y^2+66y+70

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