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College Algebra Formulas and Terms
Area of a square
A = 2S, where A=area and S=length of one side
Perimeter of a square
P = 4S, where P=perimeter and S=length of one side
Area of a rectangle
A = LW, where A=area, L=length, and W=width
Perimeter of a rectangle
P = 2L + 2W, where A=area, L=length, and W=width
Area of a circle
A = π*r², where A=area, π=pi (3.14), and r=radius
Circumference of a circle
P = 2*π*r, where P=perimeter, π=pi (3.14), and r=radius
Distance formula
D = R*T, where D=distance, R=rate, and T=time
Quadratic equation
ax² + bx + c = 0
Quadratic formula
x = (-b +/- (√b² - 4ac)) / 2a
Absolute value
the distance of the number's value (regardless of -/+ signs) from zero on the real number line;
|x|
Denominator
the part of a fraction that is on the bottom
Exponents: x¹ = ?
x
Exponents: xº = ?
1
Exponents: x^-1 = ?
1/x
Exponents: x^-n = ?
1/x^n