490836
Description
Flashcards by shannon_b2907, updated more than 1 year ago
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Created by shannon_b2907
almost 11 years ago
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| Question | Answer |
| Factorise 4x^2 - 9y^2 | 1. Same as (2x)^2 - (3y)^2 2. = 2^2x^2 - 3^2y^2 3. (2x+3y)(2x-3y) |
| Factorise x^2 - 25 | 1. (x-5)(x+5) 2. 25 = 5^2 |
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