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  $a\ne0.$   

• Linear Equation

• Linear Inequality

• Quadratic Equation

• Quadratic Inequality

Which of the following is not quadratic equation?

• 
  

  $8k-3=12$
  

• $9r^2-25=0$

• $x^2-5x+3=0$

• $\left(2x+5\right)\left(x-1\right)=-6$
  
  

Find the linear term in the quadratic equation

3𝑥(𝑥−2) = −7𝑥 + 1.

• 13x

• -13x

• x

• –7x

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

• 7

• -8

• -15

• -22

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

• (x + 1) (x + 8) = 0

• (x – 1) (x + 8) = 0

• (x -1) (x – 8) = 0

• (x+ 1) (x - 8) = 0

Which situation illustrates quadratic equation?

• The length of a rectangular board is 3m longer than its width and its perimeter is 25m.

• Joey paid at least P2,000 for the shirt and pants. The cost of pants is P700 more than the shirt.

• A garden’s length is 7m longer that its width and the area is 18 square meters.

• A lot cost P4,000 per square meter and the area is 120 square meters

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

• 7
  

• 5

• 3

• 1

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

• 𝑎= −2, 𝑏=3, 𝑐=1

• 𝑎=2, 𝑏=3, 𝑐=1

• 𝑎=2, 𝑏=−3 𝑐= 1

• 𝑎= −2, 𝑏 = −3, 𝑐 = 1

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)

•  $3x^2+11x-60=0$  

•  $3x^2+11x+60=0$  

•  $3x^2+11x-52=0$  

•  $3x^2+11x+52=0$  

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

• x

• b

• c

• a