algebra

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Last updated 8:38 AM on 6/9/26
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8 Terms

1
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how to solve binomial expansion (a+b)(c+d)

ac + ad + bc + bd

2
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x²-9

x²-3²

3
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(x+3)(x-3)

4
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how to solve (a+b)² or (a-b)²

a²+2ab+b² or a²-2ab+b²

5
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how to solve monic quadratics

find 2 numbers (lets say x &y) which multiply to c and add to b

6
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format as (a+/-x)(a+/-y)

7
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how to solve non-monic quadratics

find 2 numbers (lets say x & y) which multiply to c x coefficient of a and add up to b

8
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then divide whole thing by coefficient of a, factorise one of the parts and cancel out