Roots of a Quadratic
Solving Quadratics (factoring)
Solving Quadratics
(Quadratic Formula)
(Quadratic Formula)
Solving Quadratics
(Square Roots)
(Square Roots)
Have you been paying attention?
100
What is the solution or solutions to this quadratic function?
X= 0
100
Solve:
X^2+2X-8
X=2 or X = -4
100
x^2+x-2=0
x=1 x= -2
100
x^2+1=2
x= 1 and -1
100
What tools can you use to find factors of numbers?
Factor table
200
What is the solution or solutions to this quadratic function?
No real solutions
200
x^2+2x+8
x=-2 and x=4
200
x^2-25=0
x=5 x=-5
200
7x^2-1=699
x= 10 and -10
200
What buttons do you press to get the
sqrt
2nd, x^2
300
What is the solution or solutions to this function?
x=2 and x=4
300
Solve:
x^2-x-6
x=3 and x=-2
300
4x^2+7x-11
x=1 x=2.75
300
x^2-8=-8
x=0
300
What does the calculator say when you have a negative number under the square root?
Domain Error
400
This is the graph of:
x^2-6x+9
What are the solutions of:
-x^2+6x-9
x=3
400
Solve:
x^2-4
x=-2 and x=2
400
5x^2-7x+11
No solution
400
x^2-7=75
x=9.055 and -9.055
400
What 2 places can you find the learning targets we are working on?
Board and packet
500
If x=2 is one solution to this function, what would the other solution be?
x=-2
500
Solve:
x^2+4x-32
x=4 and x=-8
500
2x^2-8x+8=0
x=2
500
7x^2-8=-128
No Solution
500
The difference between Mrs. Densmore's age and Miss Brown's age is 23 years. If Miss Brown is 1/2 as old as Mrs. Densmore, How old are your teachers?
Miss Brown is 23 and Mrs. Densmore is 46