# Maths Revision

Mind Map by Matthew Leighton, updated more than 1 year ago
 Created by Matthew Leighton over 4 years ago
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add me plz

## Resource summary

Maths Revision
1 Expand Brackets
1.1 (x+7) (x+6)= x2 - 42x - 13
1.1.1 First you make a graph with a line in the middle (horizontal) and then put another line in the middle (Vertical). Then you put x and +7 on the top (not in the graph out side of it, on top) and put the x and 6 on the left side (not in the graph but outside) then you work out x and x bit which would be x2 then you will need to work out x and the 7 and what you put for that is +7x. now you are going to work out the left side, you already have the first box filled in which was x2, now you will need to fill in the bottom left box which will be x and +6 so you will need to put +6x for the bottom right you do 6 x 7 which is -42 then work out 6-7 which is 13 and for the answer you put x2 - 42x - 13
1.1.2 (This may be wrong but I understand It).
1.1.3
2 Volume
2.1 To work out volume you have to work out the area of the front side of the shape and times it by how long it is

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