ryannsettles7415 ryannsettles7415
  • 08-03-2020
  • Mathematics
contestada

solve the system of equations
y=x^2-3x+4
x+y=4
show all work please!

Respuesta :

Maxone73 Maxone73
  • 08-03-2020

Answer:

(0,4)

(2,2)

Step-by-step explanation:

y=x^2-3x+4

x+y=4

the second one can be rewritten as y=4-x

so the system becomes

y=x^2-3x+4

y=4-x

therefore 4-x = x^2-3x+4

that is x^2-2x=0

we can write it as x(x-2)=0 a product is = 0 when one of its factors = 0

so the solutions for x are: x=0 and x-2= 0 that means x=2

to get y you simply use 0 and 2 as value of x for any of the two equations

and you get y=4 and y=2 respectively

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