Solve By Quadratic Formula
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313.4 Solve by Quadratic Formula.notebook
April 29, 2016
Bellwork
Bellwork
13.4 Solve by Quadratic
Formula
Put the equation into vertex form:
y = x
+ 4x 12
2
Objectives:
TSW: 1. Solve quadratics by
using the quadratic
formula.
Vertex Form: ____________
Vertex: _______
Feb 2111:34 AM
Nov 410:28 AM
The Discriminant : b
2
4ac
Quadratic Equations can have:
Tells you how many
solutions
the Quadratic will have
2 Solutions
1 Solution
No Solutions
If the discriminant is:
... a positive number, then there are 2 solutions
... equal to zero, then there is 1 solution
... a negative number, then there are No Solutions
Feb 2111:34 AM
Feb 2111:34 AM
Find the discriminant for: x
2
+ 6x + 9 = 0
Find the discriminant for: x
2
+ x 56 = 0
Discriminant: ______
Discriminant: ______
# of solutions? _____
# of solutions? _____
Feb 2111:34 AM
Feb 2111:34 AM
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