Imaginary Numbers
2i(3 + 4i)
-8 +6i
(x^2) -36
92 = 7(8+4k) +8
k=1
An angle whose measure is greater than 90 degrees and less than 180 degrees
Obtuse angle
How old is Mr. Sherman?
23 years old
(You should feel bad if you said an age above 50).
(7 - i)(-4 + 5i)
-23 + 39i
x^2 -16x +60
(x-10)(x-6)
-4p -4(1-2p) = -11 + 3p
p=-7
You use this to solve for a missing side length in a right triangle given the other two known sides.
The Pythagorean Theorem
What is the square root of -128?
8i * the square root of 2
(This website won't let you type square roots unless you pay $)
(3 - 6i)(3 + 6i)
45
2m^2 +m-1
(2m-1)(m+1)
6 +3x -3 = 3(1+x)
All Real Numbers
An equation with one or more terms.
Forget the word? It's also the answer to the joke,
"What do you call a parrot that a mathematician forgets to feed?"
Polynomial
What values for x would make this undefined?
(x + 3)
(2x + 4)(x - 3)
x = -2 and x = 3
4i(12- i)(11 + 2i)
-52 + 520i
5k^2 +29k -6
(5k-1)(k+6)
-6(n-3)-5(1-n)= -8n -6n
n = -1
This letter represents the square root of negative one.
i
What is i50 equal to?
i50 = (i4)12 * i2 = (1)12 * i2
1 * i2 = 1 * -1 = -1
i50 = -1
(7i - 4i)(-5 - 6i)
18 - 15i
42k^2 -360k-600
6(7v+10)(v-10)
7(x+1) -(5x+5) = -8x-6+8
x=0
The roots of a function are the points of the function that touch the x-axis.
The roots are also called the ____________ of the function.
Zeroes
x4 - 3x2 + 5 have?