Factoring 1
Factoring 2
Closed Sets
review review
100
Factor the following
2x^2-8x-24
2(x-6)(x+2)
100
Factor the following
x^2-9x-36
(x-12)(x+3)
100
Are the set of odd numbers closed under addition? Why or why not?
No, you can add two odds and still get an even
Ex) 3+7=10
100
Solve for the missing side of the triangle
x=3.6
200
Factor the following. Name the special pattern if applicable.
12x^2+36x
12x(x+3)
200
Factor the following. Name the special pattern if applicable.
20x^2-125
5(2x+5)(2x-5)
200
Are the set of even numbers closed under multiplication? Why or why not?
Yes, they already have factors of two in what you're multiplying so product has to also be even.
200
Solve for the missing angle
theta=18
300
Factor the following. Name the special pattern if applicable.
2x^4+24x^3+72x^2
2x^2(x+6)^2
300
Factor the following
12x^3+32x-9x^2-24
(4x-3)(3x^2+8)
300
Is the set of composite numbers closed under division? Why or why not?
No, if you divide a composite number by itself, you will get one which is not composite.
300
What is probability of the complement of landing on a 3 when rolling a 6 sided dice?
5/6
400
Factor the following
3x^3-3xy-5y+5x^2
(x^2-y)(3x+5)
400
Factor the following
5x^2+17x-40
(5x-8)(x+5)
400
Are the set of prime numbers closed under multiplication? Explain why or why not.
No. Definition of a prime number is to only be able to be multiplied by one and itself.
400
What is the probability of rolling a number greater than two on a dice (numbered 1-6) or landing on tails when flipping a fair coin?
5/6