Algebra Review Flashcards
1
Q
Multiplying fractions
A
multiply across: (a/b)*(c/d)=ac/bd
2
Q
Divding fractions
A
Flip one and multiply
3
Q
Adding and subtracting fractions
A
must have the same denominator
4
Q
rule for cancelling in fractions
A
can cancel ONLY when it has an unbroken chain of multiplication
5
Q
(powers) x0=?
A
1
6
Q
(powers) x-a=?
A
1/xa
7
Q
(powers) when multiplying powers:
A
add powers: x2*x3=x5
8
Q
(powers) when dividing powers:
A
Subtract powers: x5/x3=x2
9
Q
(xa)b=?
A
xab
10
Q
(roots) sqrt(0)=?
A
0
11
Q
(roots) sqrt(1)=?
A
1
12
Q
quadratic formula:
A
13
Q
(logs) logc1=?
A
0
14
Q
(logs) logcc=?
A
1
15
Q
(logs) logc(ab)=?
A
logca + logcb