Question

Factories the given expression (y ² - 4)




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Answer 1

Answer:

(y²-4)

=(y²-2²)

=(y+2)(y-2)

Answer 2

Answer:

$Using \: \: the \: \: identity : \\ {a}^{2} - {b}^{2} = (a + b)(a - b)$

Step-by-step explanation:

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