click below
click below
Normal Size Small Size show me how
Chapter 6
Quadratic Functions
Question | Answer |
---|---|
quadratic expression, equation, function, & standard form | expression: ax^2+bx+c equation: ax^2+bx+c=0 function: f:x->ax^n+bx+c |
Expanding (x+7)^2 | (x+7)(x+7) =(x+7)x + (x+7)7 =x^2 + 7x +7x +49 =x^2 +14x+ 49 |
Bionomial Square theorem | (x+y)^2=x^2+2xy (x-y)^2=x^2-2xy+y^2 |
Absolute Value-square root theorem | For all real numbers x, square root of x^2= [x] |
Vertex form of an equation for a parabola | y-k=a(x-h)^2 |
Perfect-sqaure trinomial | x^2+2hx+h^2 |
Quadratic Formula | x=-b plus or minus the square root of b^2-4ac _____________________________________________ 2a |