Block 1 Flashcards Preview

Math 103 College Algebra > Block 1 > Flashcards

Flashcards in Block 1 Deck (5)
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1

What is an "excluded" value?

Any value that makes the expression "undefined"
- Makes the denominator equal 0

2

What is the Quadratic Formula?

x = -b +/- the square root of b^2 - 4ac / 2a

3

How to you solve for the square root of a NEGATIVE number?

Take "i" out and put in front of the square root

4

ax^2 + bx = 0 is the equation for finding:

Roots of Quadratic Equations!
- Solve for x

5

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.

f(x) = 0
f(-3) = 0 and f(6) = 0

4 (x+3) (x-6)
4x^2 - 12x - 72 is the quadratic equation