Page 42 - Year 9
P. 42
Maths: Quadratics(set 1 and 2 only): 2 of 8
Basic Algebra Expanding
Substitution Expanding Single Brackets
When we substitute values into a
Algebraic Indices Expanding double brackets that
Simplify formula we take out the variables look like single brackets
and put in the numbers.
You must use the rules of indices when simplifying
with algebra
Example: 2a + 4b
Where a = -3 and b = 5
You do 2 x –3 = -6
And 4 x 5 = 20 Expanding double brackets
Solving Equations
Then add them together:
-6 + 20 = 14
When expanding brackets it
is easier to use grid method.
Make sure you simplify at
the end
Quadratic Sequence
Factorising Double Brackets Factorising into a single bracket
Variables and numbers
