Expanding and Factorising

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A Levels Maths C1 (Algebra and Functions) Flashcards on Expanding and Factorising, created by shannon_b2907 on 17/01/2014.
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Flashcards by shannon_b2907, updated more than 1 year ago
shannon_b2907
Created by shannon_b2907 over 10 years ago
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Question Answer
Expand this expression: 5(2x+3) 1. 5 (times) 2x = 10x 2. 5 (times) 3 = 15 3. = 10x +15
Expand and Simplify 9(x-2) 1. 9 (times) x = 9x 2. 9 (times) -2 = -18 3. = 9x - 18
Expand -3y(4 -3y) 1. -3y (times) 4 = -12y 2. -3y (times) -3y = +9y 3. = -12y + 9y
Expand 4x(x+3) -2x(3x-7) 1. 4x (times) x =4x^2 2. 4x (times) 3 = 12x 3. -2x (times) 3x = -6x 4. -2x (times) -7 = +14x 4. = 4x^2 +20x
Factorise 3x + 9 1. Divide by common value = 3 2. Place remainder of values into brackets 3. 3(x+3)
Factorise 3x^2 - 9xy 1. Divide by 3x 2. 3x(x-3y) remaining values 3. Cannot be Simplified any further
Factorise 10y^2 - 5y 1. Divide by 5y 2. 5y(2y - 1) remaining values 3. Cannot be simplified further
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