Solve quadratic equations in one variable using inspection (e.g. x² = 49) taking square roots completing the square the quadratic formula and factoring as appropriate to the initial form of the equation.

Sample Practice Questions (3)

Based on the graph of the function

f (x) = x^{2} - 4

shown below, what is the solution set for

x^{2} - 4 = 0

{- 2, 2}

{0, - 4}

{4, - 4}

{- 2, 0}

The graph of the function

f (x) = x^{2} - 2 x - 3

is shown below. Based on the graph, what are the solutions to the equation

x^{2} - 2 x - 3 = 0

x = - 1

and

x = 3

x = 1

and

x = - 3

x = - 4

x = 1

The graph of a quadratic function

f (x)

is shown below. What are the roots of the equation

f (x) = 0

x = - 2

and

x = 4

x = 2

and

x = - 4

x = 1

and

x = - 9

x = 0

and

x = - 8

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