A proof of the hyperbola foci formula. [Algebra: Lesson 62 of 86]
- Author:
- Khan, Salman
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A demonstration of how to derive the quadratic formula by completing the square.
- Author:
- Khan, Salman
This is a demonstration of how to solve a quadratic inequality and develops visual intuition of what a quadratic inequality means.
- Author:
- Khan, Salman
This 3-minute video lesson looks at the radical equivalent to rational exponents.
- Author:
- Khan, Salman
This 3-minute video lesson continues to look at the radical equivalent to rational exponents.
- Author:
- Khan, Salman
This 9-minute video lesson looks at radical expressions with higher roots.
- Author:
- Khan, Salman
A demonstration of how to solve an involved ratio problem with algebra.
- Author:
- Khan, Salman
This 2-minute video lesson looks at rational exponents and exponent laws.
- Author:
- Khan, Salman
A demonstration of two ways to solve a rational inequality, or an inequality involving a fractional expression.
- Author:
- Khan, Salman
An explanation of how to solve a harder rational inequality problem.
- Author:
- Khan, Salman
Examples of how to recognize direct and inverse variation.
- Author:
- Khan, Salman
An introduction to basic algebraic equations of the form Ax=B.
- Author:
- Khan, Salman
This 5-minute video lesson looks at simplifying cube roots.
- Author:
- Khan, Salman
This 2-minute video lesson looks at simplifying expressions with exponents.
- Author:
- Khan, Salman
This 4-minute video lesson continues to look at simplifying expressions with exponents.
- Author:
- Khan, Salman
This 2-minute video lesson concludes to look at simplifying expressions with exponents.
- Author:
- Khan, Salman
This 6-minute video lesson looks at simplifying square roots.
- Author:
- Khan, Salman
This 4-minute video lesson looks at simplifying square roots.
- Author:
- Khan, Salman
This 15-minute video lesson explains when and why you can't invert a matrix.
- Author:
- Khan, Salman
