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chpater six
Question | Answer |
---|---|
quadratic expressions | ax^2 + bx + c = 0 |
binomial square theorem | (x+y)^2 =x^2 +2xy+y^2 and (x-y)^2=x^2-2xy+y^2 |
vertex form of an equation for a parabola | y-k=a(x-h)^2 |
graphing ax^2 + bx + c | forms an opening up or down parabola and can be written in vertex form. |
quadratic formula | x=-b + or - the square root of b^2 - 4ac all over 2a |
imaginary numbers | used to find negative square roots |
definition of imaginary numbers | i = the sqaure root of -1 |