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# Monthly Archives: March 2012

## Day 139 – April 9

Algebra: Chapter 13, Lesson 1, page 576. Introduction to Quadratic Equations An equation that can be written in the form of `ax^2 + bx + c = 0` is a quadratic equation. This is the “standard form”. The solutions of … Continue reading

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## Day 138 – March 30

Algebra: Chapter 11 BENCHMARK! ====================================================================== Algebra 1a: CST Review – X-Y Graphing and more square root review! Remember to graph, x (sideways) and y (vertically) and you’ll be OK!

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## Day 137 – March 29

Algebra: Chapter 12, Lesson 4, page 552. Quadratic Functions A quadratic function is defined by `f(x) = ax^2 + bx + c`. To make it easier, just replace the `f(x)` with `y` and treat as you have done in the … Continue reading

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## Day 136 – March 28

Algebra: Chapter 12, Lesson 1 and Lesson 2, page 536 and 542. Relations and Functions and Graphs A relation is a set or ordered pairs. The domain of a relation is the set of first coordinates (the x’s). The range … Continue reading

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## Day 135 – March 27

Algebra: Chapter 11 Review! ====================================================================== Algebra 1a: CST Review Square Roots: The `sqrt(25) = 5`. The `sqrt(5)` can be approximated as somewhere between the `sqrt(4)` and the `sqrt(9)`. `sqrt(9)=3` `sqrt(5) = ?` `sqrt(4)=2`, so `sqrt(5)` is closer to `sqrt(4)` than … Continue reading

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## Day 133 – March 23

Algebra: Chapter 11, Lesson 9, page 519. Equations with Radicals A radical equation contains a variable in the radicand. To solve radical equations, first convert them to equations without radicals. Just like taking the square root of 2 sides of … Continue reading

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## Day 132 – March 22

Algebra: Chapter 11, Lesson 7 and Lesson 8, page 509 and 514. Theorem of Pythagoras and its Uses `c^2 = a^2 + b^2`, where `a`, `b` and `c` are the sides of a RIGHT TRIANGLE. `a` and `b` are considered … Continue reading

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## Day 131 – March 21

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## Day 130 – March 20

Algebra: Chapter 11, Lesson 6, page 504. Addition and Subtraction of Radical Expressions To add and subtract radical expressions, you can use the same distributive property we have used in the past. You may have to rationalize the denominator and … Continue reading

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