Solving by factoring
Quadratic formula
Solving by taking square roots
Fun facts about Mrs. Myers & Mrs. Dodson
100
Solve this quadratics by factoring.
x2 + 2x = 3
x2 + 2x - 3 = 0
= (x-1)(x+3) = 0
x = 1 or x = 3
100
Is this quadratic formula?
Yes
100
What do you have to do to solve quadratics equation by taking square roots after step 1?
Isolate the squared term. Then, you have to take the square roots both sides. After that, solve the square roots to get x alone.
100
How many pets does Mrs. Myers have?
1
200
Write out the 4 steps to solve a quadratic by factoring.
Step 1. Write the equation in standard form and make sure it is equal to zero!
Step 2. Factor completely.
Step 3. Use the zero product property.
Step 4. Solve each factor to get the x.
200
Solve x2 + 4x - 21 = 0 by using quadratic formula.
x = 3 or -7
200
Solve this equation by taking square roots.
x2 + 1 = 26
x2 = 25
x= 5, -5
200
What town does Mrs. Dobson live in?
Jefferson
300
Solve this quadratic equation by factoring.
X2 + 16 = 10x
x2 - 10x + 16 =0
(x-2)(x-8)
x = 2 or x = 8
300
Solve x2 +4x + 5 = 0 using the quadratic formula.
x = -2 +- i
300
Solve this equation by taking square roots.
(x-4)2 - 16 = 0
(x-4)2 = 16
x- 4 =± 4
x = 0 or 8
300
What year did Mrs. Myers graduate from high school?
1981
400
Solve this quadratics equation by factoring.
x^2+7x+15=5
(x+2)(x+5)=0
x= -2 and x = -5
400
Solve x2 -6x + 25 = 0 by using quadratic formula.
x = 3+-4i
400
Solve for x using the square root method.
2x^2+10=210
x = 10, -10
400
How many pets does Mrs. Dodson have?
4