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I'm an IGCSE Maths Teacher - Post your questions here.

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when we put 1 in the equation we must get 3 as the answer because 3 lines are in the 1st diagram
so a(1)^3 + b(1) +1=3
a+b=2 1st equation
then we must get 12 as the answer if we put 2 in the eqation because 12 lines are needed to make 1st and the 2nd diagram so
a(2)^3 +b(2) +2=12
8a+2b=10 2nd eqaution
solve them simulataneously

could u explain me the general formula an^2+bn+c how to use and what does a,b,c refer to:
 
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thats not determinant thats modulus if a vector is:
x
y
then its modolus is root of the sum of the square of x and y
x^2 + y^2 then root it
Thanks. A lot. We didn't go through this in class and I only got today to study, really nervous. Thanks again.
 
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Hello .. please can you explain for me shear and Stretch with diagrams and how to find it's scale factors because I cant do any question in the past papers related to this TOPIC :cry: and please link any website which help to teach them (y)
Thank's a lot :)
 
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