Algebra 9 Klass Mordokovich Domashniaia - Kontrolnaia Rabota 2 Reshenie

Multiply one or both equations by numbers so that the coefficients of one variable become opposites (e.g., -5ynegative 5 y Add the equations to eliminate that variable.

2x2−10x+12=0→x2−5x+6=02 x squared minus 10 x plus 12 equals 0 right arrow x squared minus 5 x plus 6 equals 0 Using the quadratic formula or Vieta's theorem, we find Step 4: Find If .✅ Answers : Multiply one or both equations by numbers so

{x+y=5x2+y2=132 cases; Case 1: x plus y equals 5; Case 2: x squared plus y squared equals 13 end-cases; From the first equation: Step 2: Substitute Multiply one or both equations by numbers so