Solving equations
Quadratic equations of the type
[vertex form]=[constant]

One of the simplest quadratic equations is of the type: 2x² = 18.

By performing translations of one or both of its sides, you can obtain many new equations. For example:


The left side of this equation is a correspondence rule of a quadratic function in vertex form; the right side is a constant function.

Examine these equations and develop general methods for finding their solutions.

Exercise 2, Exercise 3, and Exercise 4 provide special examples of equations of the type [vertex form]=[constant].
Exercise 5 provides general examples of equations of the type [vertex form]=[constant].

Develop a general method for solving equations of the type
[vertex form]=[constant]

Examine the examples generated by the exercises linked above and discuss the following questions regarding equations of the type [vertex form]=[constant]:
When are there no solutions to the equation?
  • When is there one solution?
  • When is there more than one solution?
  • How can you find these solutions?





  • The difference equation

    vertex form = constant
    quadratic function = constant
    The difference equation
    Carpenter's problem
    Playing fields
    Warm-up
    Table designs
    Isosceles triangles
    Cutting circles
    Pairs of numbers

    Exercise 1
    Exercise 2
    Exercise 3
    Exercise 4
    Exercise 5
    Exercise 6
    Exercise 7