Illustrates Quadratic Equation

A second degree polynomial equation that can be written in the form  $ax^2+bx+c=0$  where a, b and c are real numbers and  $a\ne0.$   

Which of the following is not quadratic equation?

Find the linear term in the quadratic equation

3𝑥(𝑥−2) = −7𝑥 + 1.

What is the constant term of the (𝑥−5) (2𝑥+3) = 7

Which of the following quadratic equation is equivalent to $x^2+9x=-8$  

Which situation illustrates quadratic equation?

If $\left(x+2\right)^2=3\left(x+2\right)$ is written in standard form, the value of b is _____. 

When the quadratic equation (2𝑥 + 5) (𝑥−1) = −6 is written in standard form, what are the values of a, b, and c ?

The dimensions of a rectangle with an area of 56 $m^2$  

The dimensions of a rectangle with an area of 56 meters are (3x - 1) meters by (x +4) meters. Which of the following quadratic equation in standard form represents the situation? (3x-1)(x+4)

In the standard form  $ax^2+bx+c=0$  , which of these parameters must not be equal to zero?