Y1CH1 Algebraic expressions Flashcards
1
Q
Index laws
a^m * a^n=
(ab)^n=
A
a^m+n
a^n*b^n
2
Q
What is the difference of two squares
(x^2-y^2)=
A
(x+y)(x-y)
3
Q
What are negative fractional indices
A
a^n/m =
4
Q
What is root n called?
A
A surd
5
Q
What are surds an example of?
A
an irrational number
6
Q
How do you rationalise a denominator with a surd
A
Multiply the whole fraction by the surd and opposite too.
