KauanO584518 KauanO584518
  • 29-10-2022
  • Mathematics
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Solve the system of equations algebraically show all of your stepsy=x^2+2xy=3x+20is it x=2.8 and y=28.5?

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ThaR713419 ThaR713419
  • 29-10-2022

y=x^2+2x -----> equation A

y=3x+20 -----> equation B



substitute equation B in equation A

so

3x+20=x^2+2x

solve for x

x^2+2x-3x-20=0

x^2-x-20=0

Solve the quadratic equation

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