Question

factorize the following expression ysquare-4​

Answer 1

Answer:

y² - 4 = y² - 2² [ a²-b² = (a+b)(a-b) ]

= (y+2) (y-2)

Answer 2

Step-by-step explanation:

y²-4

(y)²-(2)²

(y+2)(y-2)

(a)²-(b)²=(a+b)(a-b)