Question

3. Factories, 2y - 4y2 - 2y +4
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Answer 1

Step-by-step explanation:

$2y - 4y {}^{2} - 2y + 4 \\ = 4 - 4y {}^{2} = 4(1 - y {}^{2} ) \\ = 4(1 + y)(1 - y)$