Algebra - Expansion of brackets

19taniaz
Mind Map by 19taniaz, updated more than 1 year ago
19taniaz
Created by 19taniaz almost 5 years ago
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Algebra - Expansion of brackets
1 Do not use 'x' to say multiply. Use brackets
1.1 3y(4-2y)
2 To expand the expression we multiply every term inside the bracket by the term outside the bracket
2.1 3y(4-2y)=12y-6y^2
2.2 When there is a negative term outside the bracket, the signs of the multiplied terms change.
2.2.1 -a(2a^2-3a+1) = -2a^3+3a^2-a
3 Sometimes we need to multiply out brackets and then simplify
4 We need to multiply out both brackets and collect together like terms
5 We need to multiply out both brackets and collect together like terms.
5.1
6 To expand or multiply out this expression we multiply every term in the second bracket by every term in the first bracket
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