FACTORING
Use the Zero Product Property to solve:
(x - 7)(x + 2) = 0
x = 7, x = 2
Simplify the square root of 16.
Hint: There are two answers.
+4 and -4
State the quadratic formula.
Answer on board.
What part of the quadratic equation is the discriminant?
b2 -4ac
Simplify the square root of -36.
6i
Solve x2 + 3x + 2 = 0
x = -2, x = -1
Simplify the square root of 8.
2 square root of 2
What is the standard form of a quadratic equation?
ax2 + bx + c = 0
How many real roots does a quadratic equation have if b2 - 4ac is greater than 0?
2
Complete: i2 = ______
-1
Solve x2 - 6x + 5 = 0
x = 5, x = 1
What number completes the square:
x2 - 8x + _______
16
Identify a, b, and c in this quadratic equation:
x2 - 6x + 5 = 0
a = 1, b = -6, c = 5
How many real roots does a quadratic equation have if b2 - 4ac is less than 0?
0
Add ( 9 + 2i) - ( 6 + 4i)
3 - 2i
Solve x2 - 6x - 27 = 0
x = 9, x = -3
What number completes the square?
x2 - 20x + ________
100
What does the graph of a quadratic equation look like?
parabola
If the discriminant is equal to zero, how many x-intercepts are there?
1
What is the complex conjugate of (-3 - 2i)?
-3 + 2i
What GCF can you factor from 3x2 - 9x + 6 = 0?
3
Express x2 - 22x + 121 as a binomial squared.
(x - 11)2
How do you know that an equation is quadratic?
What do we call the root when there is only one x-interception?
double root
What is the product of (-3 - 2i) (-3 + 2i)?
13