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MGMAT Exponents
MGMAT GMAT Exponents
29
Mathematics
Graduate
10/13/2010

Additional Mathematics Flashcards

 


 

Cards

Term

 

 

 

What happens when you raise a positive proper fraction to a power?

Definition

 

 

 

 

The value of the fraction decreases

Term

 

 

 

Decimals between 0 and 1 increase in value when raised to a higher power

 

TRUE or FALSE?

Definition

 

 

 

 

FALSE - they DECREASE in value

Term

 

 

 

You can distribute the powers in a compound base if there is a sum of two numbers inside the parenthesis

 

TRUE or FALSE

Definition

 

 

 

 

FALSE - you can only do this with multiplication inside parenthesis

Term

 

 

 

You can't distribute the powers in a compound base if the base is a product of two numbers inside the parenthesis

 

TRUE or FALSE

Definition

 

 

 

FALSE - you can distribute the exponent to each number in the base, or you can multiply the base together and then raise it to the exponent

Term

 

 

 

 

RULE: When multiplying two terms with the same base, ______ exponents by _____

Definition

 

 

combine, adding

Term

 

 

 

 

RULE: When dividing two terms with the same base, ______ exponents by _____

Definition

 

 

 

combine, subtracting

Term

 

 

 

RULE: When raising a power to a power, ______ exponents by _____

Definition

 

 

 

combine, multiplying

Term

 

 

 

 

RULE: When you see a negative exponent, think _____

Definition

 

 

 

Reciprocal

Term

 

 

 

 

Negative exponents essentially mean...

Definition

 

 

 

 

Divide by the base that certain number of times

Term

 

 

 

 

(3/4)-3 = ?

Definition

 

 

 

(4/3)3

Term

 

 

 

1/4-2 = ? = 42 = 16

Definition

 

 

1/ 1/42

Term

 

 

 

 

(-2)3 = ? = - 1/8

Definition

 

 

 

1/(-2)3

Term

 

 

 

(3/4)-3 = ? = 64/27

Definition

 

 

 

(4/3)3

Term

 

 

 

 

253/2 = ?

Definition

 

 

 

sq.rt (253)

Term

 

 

xa..xb = ?

Definition

 

 

 

xa+b

Term

 

 

ax.bx = ?

Definition

 

 

 

 (ab)x

 

e.g.  2232 = 2*2*3*3 = 4*9 = (6)2= 36

Term

 

xa/xb =

Definition

 

 

 

 x(a-b)

Term

 

 

 

(a/b) x = ?

Definition

 

 

 

ax / bx

Term

 

 

 

(ax) y = ? = (ay)

Definition

 

 

 

axy

 

Term

 

 

 

x - a = ?

Definition

 

 

 

1/xa

Term

 

 

 

xa/b= b√xa  = ?

Definition
(b√x)a
Term

 

 

 

xa/b= ? = (b√x)a

Definition

 

 

b√x 

Term

 

 

 

xa + xa + xa = ?

Definition

 

 

 

 3xa

Term

 

 

 

 

3x + 3x + 3x = ? = ?

Definition

 

 

 

 3.3x = 3x + 1

Term

 

 

 

 

34 + 34 + 34  = ? = ? = ?

Definition

 

 

 

 3.34 = 31.34 = 35

Term

 

 

 

Simplify or Factor 74 + 76

Definition

 

 

 

Cannot be simplified!

Factor = 74(72+1) = 74(50)

Term

 

 

 

Simplify 127 - 37

Definition

 

 

Cannot simplify!

Term

 

 

 

You can't factor terms when the exponent is the same and the terms contain something in common in the base

 

TRUE or FALSE?

Definition

 

 

 

FALSE - you can!

 

e.g. 34 + 124 can be factored because 124 = (2 x 3 x 3)4

Term

 

 

 

 

What's (0.04)3 ? Solve 3 ways...

Definition

 

43/1003 = 64/1000000 = 64 x 10-6 = 0.000064

 

or

 

(4 x 10-2)3 = 4 x 10-6 = 0.000064

 

or

 

0.000064 (i.e. 4x4=64, with 3 times the original # decimal places in the original decimal)

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