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jasminekennedy
jasminekennedy jasminekennedy
  • 30-05-2016
  • Mathematics
Answered

Solve each system using substitution.

-x^2-x+19=y

X=y+80

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 31-05-2016

sub

since -x^2+x+19=y

x=-x^2+x+19+80

x=-x^2+x+99

0=-x^2+99

x^2=99

x=3√11

x=y+80
3√11=y+80
minus 80 both sides
-80+3√11=y

x=3√11
y=-80+3√11


solution
(x,y)
(3√11,-80+3√11)

Answer Link

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