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19-12-2017
Mathematics

contestada

Solve the following system.

y = -2x 2 + 3x - 1 and x + y = -1.

The solutions are
_and

Respuesta :

19-12-2017

From the second equation y=-1-x so we can write -2x²+3x-1=-1-x.
So -2x²+4x=0, 2x(-x+2)=0, therefore x=0 or 2 and the corresponding y values are -1 and -3.
We can write the answers as ordered pairs (0,-1) and (2,-3).

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