Factors Flashcards
Factorise by grouping terms (plan B)
Not all expressions will have an overall common factor
We pair certain terms together
Might have to reorder terms first
Be careful when negative terms
HCF
Highest common factor
Both what must be identical?
Brackets
What happens if terms aren’t the same
Reorder terms
What do you if terms are already factorised
Don’t do anything
Factorising quadratic expressions
An expression where the highest power of x is 2
A, b and c are numbers
Order of operations on factorising quadratic expressions
Open 2 brackets
What 2 terms multiply together to give us x squared
What whole numbers multiply together to give us ______
Check signs on original expressions
What’s the guide number
Last number
Step 3.
Pick a pair that subtracts or adds to give us the middle term
Dots
Difference between 2 squares
Perfect squares
1, 4, 9