PSAT-MATH
u² − v² = (u + v)(u - v) - difference of two squares
set - Collection of "things" that have been grouped together in some way
elements, members - A set is a collection of "things" that have been grouped together in some
way. These "things" are called. . .
union - The. . .of two sets, A + B, is the set consisting of all the elements that are in A or B or
both-represented as A U B.
intersection - The. . .of two sets, A + B, is the set consisting of those elements that are in both A
+ B.
solution set - The. . .of an equation is the set of all numbers that satisfy the equation
positive, negative - The numbers to the right of 0 in the number line are called. . . and those to
the left of 0 are called. . .
absolute value - The. . .of a number a, denoted IaI, is the distance between a and 0 on the
number line.
4 - 6 + (-2) = ?
-4 - (-6) + 2 = ?
consecutive integers - Two or more integers written in sequence in which each integer is 1
more than the preceding one.
prime numbers - Positive integers, such as 7, which have exactly two positive divisors are called.
..
1 - b to the zeroth power =
PEMDAS - Order of operations
ab + ac - For any real number a, b, and c; a (b + c) = ?
u² − v² = (u + v)(u - v) - difference of two squares
set - Collection of "things" that have been grouped together in some way
elements, members - A set is a collection of "things" that have been grouped together in some
way. These "things" are called. . .
union - The. . .of two sets, A + B, is the set consisting of all the elements that are in A or B or
both-represented as A U B.
intersection - The. . .of two sets, A + B, is the set consisting of those elements that are in both A
+ B.
solution set - The. . .of an equation is the set of all numbers that satisfy the equation
positive, negative - The numbers to the right of 0 in the number line are called. . . and those to
the left of 0 are called. . .
absolute value - The. . .of a number a, denoted IaI, is the distance between a and 0 on the
number line.
4 - 6 + (-2) = ?
-4 - (-6) + 2 = ?
consecutive integers - Two or more integers written in sequence in which each integer is 1
more than the preceding one.
prime numbers - Positive integers, such as 7, which have exactly two positive divisors are called.
..
1 - b to the zeroth power =
PEMDAS - Order of operations
ab + ac - For any real number a, b, and c; a (b + c) = ?
