Important Formulas - Formulas Law of Exponents am an = am n(am)n = amn am = amn n a(a b)n = an bn b b2 4ac Quadratic formula x = 2a Distance formula d =

Important Formulas - Formulas Law of Exponents am an = am...

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Formulas Law of Exponents: a m · a n = a m + n ( a m ) n = a mn a m a n = a m - n ( a · b ) n = a n b n Quadratic formula: x = - b ± b 2 - 4 ac 2 a Distance formula: d = q ( x 2 - x 1 ) 2 + ( y 2 - y 1 ) 2 Midpoint formula: x 1 + x 2 2 , y 1 + y 2 2 Slope-intercept form of a linear equation: y = mx + b Point-slope form of a linear equation: y - y 1 = m ( x - x 1 ) Vertex of a parabola: ( h, k ) = - b 2 a , f - b 2 a !! Exponential growth/decay model:

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