This week we only did one lesson because we had our unit test. The lesson we learnt brings a lot of the stuff we learnt in grade 10 back into our heads. Solving Quadratic Equations, is basically factoring from grade 10 except a bit more difficult. When solving these equations there are a few steps you need to remember… CDPEU
Common – 6x+12 -> 6(x+2)
Difference of squares – binomial -16 = (x-4)(x+4)
Pattern – + x + a
Easy – 1
Ugly – a
We also learnt various ways to factor “ugly equations”. One is a box formation for people who are more visual learners and another is a method a friend taught me that I find quite easy called “bottoms up” . I have inserted an example of both methods along with another question I found had a cool method to solving.
Bottoms Up Method
Box Method
Example: When doing the lesson Ms. Burton taught us that if the equation looks like the one below you can replace a section of it with a variable to make it a easy equation.