GRE Math Formulas
slope intercept formula - y = mx + b
m = slope
b = y-intercept
(a^x)(a^y)=? - a^(x+y)
(a^x)/(a^y)=? - a^(x-y)
two point slope formula - (Δy)/(Δx)
PEMDAS - Parentheses, exponents, multiplication and devision (L to R), addition
and subtraction (L to R)
√1 - 1
√2 - 1.4
√3 - 1.7
, GRE Math Formulas
√4 - 2
negative × negative = ? - positive
positive × negative = ? - negative
Only even prime number - 2
x⁻ⁿ = ? - 1/xⁿ
A number is divisible by 3 if... - The sum of its digits is divisible by 3
A number is divisible by 5 if... - It ends in 0 or 5
A number is divisible by 2 if... - Its ones place is divisible by 2
Area of a Δ - ½bh
slope intercept formula - y = mx + b
m = slope
b = y-intercept
(a^x)(a^y)=? - a^(x+y)
(a^x)/(a^y)=? - a^(x-y)
two point slope formula - (Δy)/(Δx)
PEMDAS - Parentheses, exponents, multiplication and devision (L to R), addition
and subtraction (L to R)
√1 - 1
√2 - 1.4
√3 - 1.7
, GRE Math Formulas
√4 - 2
negative × negative = ? - positive
positive × negative = ? - negative
Only even prime number - 2
x⁻ⁿ = ? - 1/xⁿ
A number is divisible by 3 if... - The sum of its digits is divisible by 3
A number is divisible by 5 if... - It ends in 0 or 5
A number is divisible by 2 if... - Its ones place is divisible by 2
Area of a Δ - ½bh
