Math Flashcards
non- real numbers
1) Square root of a negative number
2) any number divided by 0
What number is a factor of every number?
1
3 Rules of Prime Numbers
1) ) is not a prime number as it is divisible by more than two factors. (Zero divided by anything is still zero)
2) One is not a prime number, because it has only one factor: itself
3) Two is the only even prime, because it’s the one even number with exactly 2 factors.
Composite numbers
1) Have more than 2 factors, and can be divided by more than 1 and itself.
2) Any composite number can be broke down to its prime factors.
(x)**0
=1; for any x;
y**-4
1/y**4
(x3)(x2)=
x(3+2) = x5
(x5) / (x3) =
x(5-3) = x2
(x2)3
=x(2x3)=X6
14x3 - 9x2
= 14x3 - 9x2
(a + b)(a - b)
a2 - b2
(a + b)**2
a2 + 2ab + b2
(a - b)**2
a2 - 2ab + b2
√ 2
~ 1.41
distance formula
a2 + b2 = c**2
distance bt two points
√(x2 - x1)2 + (y2 - y1)2
Slope formula
(y2 - y1)/ (x2 - x1)
Equation of a line (slope - intercept form)
y = mx + b
midpoint of a line segment
( (x1+x2) / 2, (y1 + y2) / 2 )
Complementary angles
2 angles together form a right angle
Supplementary angles
2 angles together form a straight line
vertical angles
opposite angles where 2 lines cross. Have equal measures.
transversal
a line that cuts through two other lines
Transversal angles
formed where the transversal intersects with the other two lines
