Category Archives: World Peace

Algebra: Chapter 11-3, p349 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)` , we could break … Continue reading →

Algebra: Chapter 11-1 and 11-2, p 482 and p 48 Real Numbers (Square Roots) and Radical Expressions Definition: the number `c` is a square root of `a` if `c^2 = a`. Prinicipal square root is the positive square root. `√` … Continue reading →

Algebra: Chapter 10-9, p 465 Dividing Polynomials To divide a polynomial by a monomial, divide each term by that monomial. If the divisor is not a monomial, then we need to use long (I call it synthetic from my ‘oldness’) … Continue reading →

Algebra: Chapter 10-8, p 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 (total amount … Continue reading →

Algebra: Chapter 10-7, p 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 does it … Continue reading →