02 Quadratics

Question 1

When solving an equation you may have to square root a number, what symbol should you write in front of this number?

Answer 1

±

Question 2

What is the domain?

Answer 2

The set of possible input values.

Question 3

What is the range?

Answer 3

The set of possible output values.

Question 4

How do you find the turning point of a quadratic when you have it in the completed square format?

Answer 4

Flip the number inside the bracket, leave the number out the outside of the bracket.
(A+B)* + C results too (-B,C)

Question 5

What does it mean if the discriminant is bigger the 0?

Answer 5

There are 2 real roots.

Question 6

What does it mean if the discriminant is equal to 0?

Answer 6

There is 1 repeated root or ‘equal roots’

Question 7

What does it mean if the discriminant is smaller than 0?

Answer 7

There are no real roots.