Indicies Flashcards
1
Q
What is N integers?
A
Natural positives integers (1,2,3,4,5,6,)
2
Q
What are Z integers?
A
integers that are either positive or negative
3
Q
What are R integers?
A
real includes all rational numbers such as integers and fractions and irrational numbers ie Pi
4
Q
What are Q integers?
A
rational any number that can be expressed as a fraction decimal or percentage.
5
Q
What are examples of : national integers real rational
A
national = 1,2,3,4,5 integers = - 4, -3, -2, -1, 0 , 1, 2, 3 real = 5/3, pi rational = 0.97, 1/3, -2/3
6
Q
What is a surd?
A
square roots that cannot be expressed as rational numbers
7
Q
What is (√x)^2
A
x
8
Q
what is (2√a)^2
A
4a
9
Q
What is √45
A
3√5
10
Q
What is √81a^2
A
9a
11
Q
What is √9a + √9a - √16a
A
= 3√a + 9√a -4√a = 8√a
