Respuesta :

thejalynn2

quadratic equation is 2 degree polynomial

x2 - x -72 = x2 - 9x +8x -72

x(x - 9 ) + 8(x - 9) = (x -9) (x+8)

1st correct - quadratic

2nd correct - quadratic

3rd - it's linear equation, not quadratic

4th - correct - quadratic

5th - linear - not correct

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