Post on 18-Jan-2016
Standard 20 The Quadratic Formula
02 cbxax
a2ac4bb
x2
03108 2 xx
a2ac4bb
x2
Example with numbers put in
Example One.Instructions: using the quadratic formula
02 cbxax0263 2 xx
)3(2
)2)(3(466 2 x
6
24366 x
6
121x
)3(2
)2)(3(466 2 x
6
24366 x
6
121x
+6
+62x3=6a=3b=6c=2
02 cbxax
a2ac4bb
x2
03108 2 xx
a2ac4bb
x2
Classwork One
Example TwoInstructions: Can you solve this quadratic
)3(2
)5)(3(444x
2
660164
x
6444
x
Square roots of negatives don’t exist
Quadratic has no real answer
Classwork Two.
Example Three.Instructions: Write the equation so you can use the quadratic formula
2x32x6
6
121x
+3x ² +3x²
02x6x3 2
6
121x
Classwork Three.
Classwork One.
Home Work memorizeThe Quadratic Formula
02 cbxax
Classwork One.Instructions: Solve each equation using the quadratic formula
Classwork Two.Instructions: Solve each equation using the quadratic formula