High School Math Skills
Posted by sky | Tags: Math, exercise
From Antonio Math blog. I don't remember having to learn the vertex, focus, and directrix of the parabolas or the center, vertices, foci, and eccentricity of the hyperbola. Other than that, it is ok. Just a note to Factor the polynomial x3 - 27 without knowing the formula. First, when x = 3, x3 - 27 = 0 , so (x - 3) is a factor if it can be factored. By using long division, one can find the other factor.
x2 + 3x + 9
x - 3 /x3 - 27
- x3 - 3x2
3x2 - 27
- 3x2 - 9x
9x - 27
- 9x - 27