Irene0718viz
Answered

1. Which of the following expressions represents a quadratic equation?
I. (x+5) (x+5) =3 II. x² = -2x+5 III. 2x - 1 =3x+7

A. I only B. III only C. II only D. I and II

2. In the equation 5x² - 120 =2x, what is the quadratic term?
A. 5x² B. 2x C. -120 D. -2x

Sagot :

Dyn07viz

Answer:

1. C

2. A

I'm not quite sure po but I hope this could help.

Nyle07viz

1. D. I and II

  • If you expand (x+5) (x+5) =3, it will be x^2 + 10x +22=0.
  • If you transform x² = -2x+5 into the standard form, it will be x^2 + 2x -5 = 0.
  • If you simplify 2x - 1 = 3x + 7, the answer will be x = -8.

2. A. 5x^2

  • The parent graph of a quadratic equation is y = x^2.

- Hope it helps.