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SAT Formulas to have memorized
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(x-h)²+(y-k)²=r²
The equation of a circle where (h,k) is the center of the circle and r is the radius
√(x2-x1)2+(y2-y1)2
The distance formula for points on a coordinate grid
-b/a
Sum of the roots of a Quadratic Equation
c/a
Product of the roots of a quadratic equation
-b/2a
Axis of symmetry on a parabola
b+-√b2-4ac/2a
The Quadratic Equation
a2+b2=c2
Pythagorean Theorem
πr2
The Area of a Cirlce
dπ or 2πr
The Circumference of a Circle