05-01-2020
Mathematics

contestada

find the solutions to the system of equations. x^2-y=4. 2x + y = -1

Respuesta :

surjithayer10otahza surjithayer10otahza

05-01-2020

Answer:

Step-by-step explanation:

x²-y=4

y=x²-4

2x+y=-1

2x+x²-4=-1

x²+2 x-3=0

x²+3 x-x-3=0

x(x+3)-(x+3)=0

(x+3)(x-1)=0

x=-3,1

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