GRADE 9 REVIEWER

What is the first step in solving a quadratic equation by factoring?

• Take the square root

• Set the equation to zero

What must be true for factoring to be used?

• Equation must be equal to zero

• Equation must be linear

If a quadratic has a constant of 0, one root will always be:

• 1

• 0

In (x+4)(x−1)=0, what are the possible values of x?

• 4 and -1

• -4 and 1

Factoring is most effective when the quadratic is:

• Easily Factorable

• Irrational

Completing the square means turning a quadratic into a:

• Perfect square trinomial

• Linear equation

What is added to complete the square in x²+6x?

• 12

• 9

Why do we add the same value to both sides of the equation?

• To complete the square

• To keep the equation balanced

Completing the square is useful when the quadratic:

• Cannot be factored easily

• Has no constant

The term added to complete the square comes from:

• (b/2)²

• b²