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# Monthly Archives: March 2009

## Day 136 – March 31

Algebra: Chapter 11, Lesson 4, page 495. Multiplying Radical Expressions Remember that the `sqrt(ab) = sqrt(a)⋅sqrt(b)` and you can’t go wrong. Make sure that you simplify and identify perfect squares. Practice makes perfect. The steps can be stated as: Multiplying … Continue reading

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## Day 135 – March 30

Algebra: Chapter 11, Lesson 3, page 349. Simplifying Radical Expressions REMEMBER: `sqrt(x^2) = (x^2)^(1/2) = x^(2 * (1/2)) = x`. The `sqrt` is just a variable, expression or constant raised to the `1/2` power! It’s easy to simplify radicals. You … Continue reading

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## Day 134 – March 27

Algebra: Chapter 11, Lesson 1 and Lesson 2, page 482 and page 487. Real Numbers (Square Roots) and Radical Expressions Definition: the number `c` is a square root of `a` if `c^2=a`. In math symbols then, `c = sqrt(a^2)` Prinicipal … Continue reading

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## Day 133 – March 26

Algebra: Chapter 10 TEST! Make sure that you finish it at home, double check your answers!

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## Day 132 – March 24

Chapter 10 Review Today, we worked in cooperative groups on version A and B of the test. The test is THURSDAY – make sure that your notes are up-to-date! The end of the chapter Assessment on page 479 is a … Continue reading

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## Day 131 – March 23

Chapter 10, Lesson 12, page 475. Reasoning Strategies You can use the following strategies on the reasoning strategy problems in Chapter 10-12. Draw a diagram Make an organized list Look for a pattern Try, test and revise Use logical reasoning … Continue reading

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## Days 129, 130 – March 19 and 20

Algebra: Chapter 10, Lesson 10, page 469. Complex Rational Expressions To simplify a complex rational expression, multiply the numerator and denominator by an expression equivalent to `1`. The expression selected should use the least common multiple of any denominator found … Continue reading

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## Days 127, 128 – March 17 and 18

Algebra: Chapter 10, Lesson 9, page 465. Dividing Polynomials To divide a polynomial by a monomial, divide each term by that monomial. For example: `(6x^2 + 3x – 2)/3` becomes `(6x^2)/3 + (3x)/3 -2/3` or simplifying terms, we have `2x^2 … Continue reading

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## Days 125, 126 – March 13 and 16

Algebra: Chapter 10, Lesson 8, page 460. Mixture Problems Whether they are acid mixes or coffee bean blends or mixed nuts, we treat these problems the same. `x` will stand for the amount of one of the mixes and the … Continue reading

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## Day 124 – March 12

Algebra: Chapter 10, Lesson 7, page 455. Using Rational Equations We are working on DRT problems and “WORK” `1/x` problems. These say, if it takes one person 2 hours to do a job and another person 3 hours, how long … Continue reading

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