 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from jessica, a student: can you check my answer please thanks f(x)=2x^2-4x+5 I got 2(x+2)^2-3 for when it asked to simplify it to standard form of a quadratic |
Hi Jessica.
The "standard form" of a quadratic equation is y = a (x - h)2 + k, which your answer fits.
Now to see if your answer has the right values:
f(x)=2x2-4x+5
= 2 (x2 - 2x) + 5
= 2 (x2 - 2x + 1) + 5 - 2
= 2 (x - 1)^2 + 3.
Check where you went wrong. Remember to complete the square after factoring out the "a" value.
Cheers,
Stephen La Rocque.
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.