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28 Cards in this Set

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 i^0 1 i^1 i i^2 -1 i^3 -i quadratic formula finds the roots x equals negative B plus or minus the square root of B sqaured minus 4(a)(c) all over 2(a) discriminant describes the roots the square root of b squared minus 4(a)(c) sum of roots -b ___ a product of roots c ___ a if x>0 and perfect square: 1) roots are real, rational and unequal 2) 2 x-intercepts if x<0, not a perfect square 1)roots are real, irrational, unequal 2)2 x-intercepts if x=0 1)roots are real, rational and equal 2)1 x-intercept, tangent to the x-axis if x<0 1)imaginary roots 2)no x intercepts x^2= above the x axis -x^2= below the x axis what can't you have in the denominator of a fraction? i and a radical i^0 1 i^1 i i^2 -1 i^3 -i quadratic formula finds the roots x equals negative B plus or minus the square root of B sqaured minus 4(a)(c) all over 2(a) discriminant describes the roots the square root of b squared minus 4(a)(c) sum of roots -b ___ a product of roots c ___ a if x>0 and perfect square: 1) roots are real, rational and unequal 2) 2 x-intercepts if x<0, not a perfect square 1)roots are real, irrational, unequal 2)2 x-intercepts if x=0 1)roots are real, rational and equal 2)1 x-intercept, tangent to the x-axis if x<0 1)imaginary roots 2)no x intercepts x^2= above the x axis -x^2= below the x axis what can't you have in the denominator of a fraction? i and a radical |a+bi| x= the square root of a^2 + b^2 the square root of a negative = i radical number or if its a perfect square, number then i