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Chapter 6
Quadratic Functions
| Question | Answer |
|---|---|
| Quadratic Expression, Standard Form of a Quadratic | ax^2+bx+c |
| Binomial Square Theorem | (x+y)^2=x^2+2xy+y^2 (x-y)^2=x^2-2xy+y^2 |
| Absolute Value | the distance of the number from 0 |
| Absolute Value of Square Roots | square root of x^2 = absolute value of x |
| Irrational Number | can't be written as a simple fraction |
| Corollary | the image of y=ax^2 under the translation T h,k has the equation y-k=a(x-h)^2 |
| Newton's Formula | h=-1/2gt^2=v(0)t+h(0) |
| Perfect Square Trinomial | x^2+2hx+h^2 |
| Theorem | to complete the square x^2+bx add (1/2b)^2 |
| Quadratic Formula | x= -b plus or minus the square root of b squared minus 4ac all over 2a |
| Imaginary Numbers | square roots of negatives 'i' |
| i | = square root of -1 |
| Complex Number | a real number an imaginary number are added a+bi |
| Discriminant | b^2-4ac |
| Two Real Solutions | discriminant is greater than 0 |
| One Real Solution | discriminant =0 |
| Two Complex Conjugate Solutions | discriminant is less than 0 |