Algebra Flashcards
1
Q
What are rational numbers
A
fractions 2/3
2
Q
How do you deal with adding and subtracting Rational numbers (fractions)
A
- need LCD
- can multiply the bottom by each other and then cross multiply the tops
3
Q
How do you deal with Dividing rational numbers (Fractions)
A
- change to improper fraction if you have something like 1 2/3
- multply the 3 x 1 + 2
- check the sign (ie. - / - = +)
- Reverse second fraction i.e.
4/3 / 7/3 = 4/3 x 3/7
4
Q
when you are multiplying numbers how do you deal with the exponents
A
add them
5
Q
when you are dividing numbers how do you deal with exponents
A
you subtract them
6
Q
what is any number to the exponent 0
A
1
7
Q
What is a radical
A
square root
8
Q
need to work on these questions online etc
A
ok
9
Q
what does the following become
(a)^m (a)^n
A
a^m=n
10
Q
What does the following become
(a^mb^n)^p
A
a^mp b^np
11
Q
What does the following become
(a^m)^n
A
a^mn
12
Q
What does the following become
a^m / a^n
A
a^m-n
13
Q
What does the following become
(a^m/b^n)^p
A
a^mp / b^np
14
Q
2 ^-2
A
1/2^2 = 1/4
15
Q
-2^-2
A
(-1)(2^-2) = -1/4
