Edexcel A Level Maths Year 1 Pure Notes

Algebraic Expressions

Negative and fractional Indices
power 2
/3 2


8
⅓
= 8
2
= 18 = 22=4
Root
✗-9lb
= (brac)"
10C"/(silk)

(5)""= (¥19b brya = 1
bfa


- I
a = ¼ -Reciprocal

- A negative indice will either mean ① or will
flip a fraction


① 13pct)-4

I
/ Remove negative power
/3pq8/4

= 34ps q8 4



=
8/p4q②-8×4


2 Given y= 2" Express 4" in terms of y


4=1224 = 2"
"
(y)': y'


③ Reciprocal of y'll is 5, find y
Reciprocal
yolk = 5 Flip fraction
when fractional indices
-⅔
yes switches place in equation