02 Quadratics Flashcards
1
Q
When solving an equation you may have to square root a number, what symbol should you write in front of this number?
A
±
2
Q
What is the domain?
A
The set of possible input values.
3
Q
What is the range?
A
The set of possible output values.
4
Q
How do you find the turning point of a quadratic when you have it in the completed square format?
A
Flip the number inside the bracket, leave the number out the outside of the bracket.
(A+B)* + C results too (-B,C)
5
Q
What does it mean if the discriminant is bigger the 0?
A
There are 2 real roots.
6
Q
What does it mean if the discriminant is equal to 0?
A
There is 1 repeated root or ‘equal roots’
7
Q
What does it mean if the discriminant is smaller than 0?
A
There are no real roots.
