Numbers and Fractions

Basic Formulas

Ship 2

Numbers and Fractions

Real Numbers

Fractions and Proportions

Absolute Values

Polynomials

Quadratic and Cubic Polynomials

Binomial Theorem

Progressions

Arithmetical Progressions
Geometrical Progressions

Exponential and Logarithmic Functions

Exponential Identities

Logarithmic Identities

Inequalities

Hyperbolic Functions

Real Numbers

Identities
a + b = b + a a b = b a	(a + b) + c = a + (b + c) a ( b + c ) = a b + a c ( a b ) c = a ( b c )
If a = b then a + c = b + c, a c = b c.	If a + b = c then a = c – b. If a – b = c then a = c + b.
Inequalities
If a > b then a + c > b + c.	If a > b and c > 0 then a c > b c.
If a > b then a – c > b – c.	If a > b and c < 0 then a c < b c.