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Results tagged with algebra
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user 238
Algebra is the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
7
votes
How should one approach the concept of "plus or minus", such as in the numerator of the quad...
When solving a quadratic equation,
$$ax^2+ bx+ c = 0$$
we use shorthand for the two solutions, to include both $$x_1 = \frac {-b +\sqrt{b^2-4ac}}{2a}$$
and $$x_2 = \frac{-b - \sqrt{b^2 -4ac}}{2a}$ …
- 2,096
5
votes
High school maths textbook for talented students
A possible (freely available textbook in pdf format) you might use to address Algebra II AND Trigonomtry can be found here. … Another Algebra II text, used in an Honors Algebra II course, with each chapter of the text available freely for download in pdf format, can be found here. …
- 2,096
3
votes
Practical case for solving with system of 2 equations
Another common problem often used in school algebra classes are of the form, similar to the following:
Maria and Juan are siblings. The sum of their ages now is 16. …
- 2,096