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Chapter 6

Quadratic Functions

QuestionAnswer
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
Created by: sydneywisniewski
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