Illustrating Quadratic equation

1. Which of the following is a quadratic equation?

• x² + 5x -2

• x² = 3x

• -2x = 5²

• 2x + 5 = 0

In 5x + 3x² = -4, which is the quadratic term?

• 5x

• 3x²

• 4

• -4

Which of the following is a complete quadratic equation?

• 5x + 2 = 0

• x - 5 = 3x

• 2x² + 5x - 7

• 3x - 2 = 4x²

It is a polynomial equation of degree two that can be written in the form

ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0.

• Linear Equation

• Linear Inequality

• Quadratic Equation

• Quadratic Inequality

Which of the following is a quadratic equation?

•  $3s^2+s–4$  

•  $m^2–8m–1=0$  
  

•  $2x–1=5$  
  

• 
   $5y^2+4y\ge7$  
  

In the quadratic equation 2x² – 9x – 5 = 0, which is the quadratic term?

• 2x²

• x²

• – 9x

• – 5

Which of the following is written in standard form?

•  $x\ \left(\ x\ +\ 3\right)\ =\ 0$  

•  $x^2\ +\ 4x\ =0$  

•  $9\ -\ 6x\ =\ x^2$  

•  $x^2\ +\ x\ =\ 6$  

The standard form of the quadratic equation ( x - 3 ) ( x + 6 ) = 0

•  $x^2\ ^{ }+3x\ +\ 18\ =\ 0$  

•  $x^{2\ \ }-\ 3x\ -\ 18\ =\ 0$   

•  $x^2\ +\ 3x\ -18\ =\ 0$   

•  $x^2\ -3x\ +\ 18\ =\ 0$   

What is the value of  $a$  in the equation  $3x^2\ -\ x\ +\ 5\ =\ 0$   

•  3

•  $-1$    

•  5

•   0

What is the value of  b  in the equation  $3x^2\ -\ x\ +\ 5\ =\ 0$   

•  3

•  $-1$    

•  5

•   0