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Complex Conjugate
(a+bi) (a- bi)= a²+b².
Slope-Intercept Formula
y=mx+b
Vertex Form of a Parabola/Quadratic
y=a(x-h)² +k
Distance Formula
d = √((x₂-x₁)² + (y₂-y₁)²)
Quadratic Formula
x = (-b±√(b² -4ac))/2a
Exponent Rule(Multiplication)
a^n * a^m = a^(n+m)
Exponent Rule(Division)
a^m/a^n = a^(m-n)
Exponent Rule(Power raised to a Power)
(a^n)^m = a^(n*m)
Difference of Squares
(x-y)(x+y) = x²-y²
Complex Conjugate
(a+bi)(a-bi)=a²+b²
Exponential Growth and Decay
y=a(1±r)^x
Simple interest
A=Prt
Compound interest
A=P(1+(r/n))^nt
Area of a Equilateral Triangle(knowing a side)
A=(√(3) ∙ s²)/4
Equation of a Circle
(x-h)² + (y-k)² = r
Degrees to Radians
degrees * (π/180)
Pythagorean Theorem
a^2 + b^2 = c^2
Regular Polygon Interior Angle
180(n-2)/n
Length of Arc in a Circle
(central angle/360)2πr
Area of Sector in a Circle
(central angle/360)πr²