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Algebra 2: Quadratic Equations (Factorising Equations (3 types) (Grouping…
Algebra 2: Quadratic Equations
Factorising Equations (3 types)
Grouping (in pairs)
Difference of two squares (DOTS)
Taking out common term
Solving Quadratic Equations (2 ways)
Factorise, and let both brackets = 0
Quadratic Formula. Log book page 18
Solving quadratics with fractions
Multiply each term of the equation by all of the denominators - this will allow "cancelling"
Simultaneous - one quadratic, one linear
Step 1: Rearrange linear equation so that x = .... or y = ...
Step 2: Sub this into circle
Step 3: Sub answers into line to find other 2 values
Forming quadratic equations
Given the roots. Example: x = 3, x = 5
(x-3) (x - 5) = 0
xsquared -5x -3x +15
x squared -8x + 15
Laws of Indices (8 rules)
Equations involving Indices
Try to get the same base number
Dealing with Surds
Adding and Subtracting
Multiplying and Dividing
Equations involving Surds (Get rid of square root sign, by squaring both sides)