Monthly Archives: April 2010

Algebra: Chapter 11, Lesson 7 and Lesson 8, pages 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 →

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 →

Algebra: Chapter 11, Lesson 5, page 498. Dividing and Simplifying The `sqrt` of quotients is pretty simple. You can combine or break apart quotient `sqrt`s to your liking. Try to find perfect squares and make sure that all the factors … Continue reading →

SNOW DAY #6

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 →

Algebra: Chapter 11, Lesson 3, page 493 Simplifying Radical Expressions `sqrt(x^2)` = square root `(x^2)` = `x` Its easy to simplify radicals. You can break up numbers and variables, because multiplication is commutative. If asked to find the `sqrt(100)` , … Continue reading →

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 →