Algebra: Chapter 13-6, p 598
Solving Radical Equations
We can solve radical equations by first using the principle of squaring to find the quadratic equation. Remember, squaring a square root results in the stuff under the radical being displayed without any exponents. For example the `(sqrt (27 – 3x))^2` is just `27 – 3x`!
If we have formulae and you have to solve it for a given variable, treat that variable as the ONLY one, and treat the other variables as if they are constants. Manipulate the formula to isolate just that variable. See the examples on page 599 for formulae examples.
Here are some more examples for purplemath. The pages before and after this one are also pretty good review.
Math-8: CST Review Packet
Today we worked on pages 1, 2, 3 and 4 in our packet in preparation for the CST/STAR testing. Bring your brain ready to work and ask questions!