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Quadratic Equations parabola (Standard Form (Solve for x-intercepts by…
Quadratic Equations
Standard Form
ax^2+bx+c
Quickly see y-intercept
a>0: opens up
a<0: opens down
Solve for x-intercepts by factoring or quadratic formula
How to Factor
Graphing (Vertex) Form
Completing the square
Advantages
Quickly see the vertex
Use algebra to solve for x intercepts (undoing
)
Graphing
Use Graphing calculator
Vertex: Highest or lowest point
U shaped
If a=1. pattern is 1,3,5,7,etc
Applications
Kicking a ball
Tossing a football
Playing with a yo-yo
