Qualification > Math
IGCSE MATHS DOUBTS HERE !!!!
astarmathsandphysics:
sod him then
SauD~:
Can anyone tell me how to solve questions like 20(b)(i) :-[
The Golden Girl =D:
--- Quote from: SimoN on January 21, 2011, 10:58:46 am ---Can anyone tell me how to solve questions like 20(b)(i) :-[
--- End quote ---
It's Alright with LOADS of practice you'll get the hang of it. :D
(x-3)2
is the SAME as (x-3)(x-3)
the easiest way is to follow this Rule :
(a-b)2
a2 - 2ab + b2
(x-3)2
x2 - 2(x*-3) + (3)2
x2 + 6x + 9
or the long method which is ;
(x-3) (x-3)
x2 -3x -3x +9
x2 -6x + 9 :)
elemis:
--- Quote from: SimoN on January 21, 2011, 10:58:46 am ---Can anyone tell me how to solve questions like 20(b)(i) :-[
--- End quote ---
How long ago did you start your IGCSE course ?
When are your real IGCSEs ?
SauD~:
--- Quote from: ~ The Golden Girl ~ on January 21, 2011, 11:27:25 am ---It's Alright with LOADS of practice you'll get the hang of it. :D
(x-3)2
is the SAME as (x-3)(x-3)
the easiest way is to follow this Rule :
(a-b)2
a2 - 2ab + b2
(x-3)2
x2 - 2(x*-3) + (3)2
x2 + 6x + 9
or the long method which is ;
(x-3) (x-3)
x2 -3x -3x +9
x2 -6x + 9 :)
--- End quote ---
no no Nuna i knew that ;D
the question below that one... never have done that in class ;D
Tomorrow is the exam... and i did the past paper i got 66/70 :D
only because of that and some silly mistakes :D
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