Block 1 Flashcards
1
Q
What is an “excluded” value?
A
Any value that makes the expression “undefined”
- Makes the denominator equal 0
2
Q
What is the Quadratic Formula?
A
x = -b +/- the square root of b^2 - 4ac / 2a
3
Q
How to you solve for the square root of a NEGATIVE number?
A
Take “i” out and put in front of the square root
4
Q
ax^2 + bx = 0 is the equation for finding:
A
Roots of Quadratic Equations!
- Solve for x
5
Q
Given roots and a Leading Coefficient, what principle would you use to find a Quadratic Equation?
Ex: Roots are -3, 6 and LC is 4.
A
f(x) = 0 f(-3) = 0 and f(6) = 0
4 (x+3) (x-6)
4x^2 - 12x - 72 is the quadratic equation
