Question

Expand y² - 16 by using a² - b²​

Answer 1

Answer:

y² - 16

(y)² - (4)²

(y-4)(y+4)

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Answer 2

Question:-

➡ Expand y² - 16 by using identity.

Solution:-

y² - 16 can be written as,

= (y)² - (4)²

= (y + 4)(y - 4)

Answer:-

• y² - 16 = (y + 4)(y - 4)

Identity Used:-

➡ x² - y² = (x + y)(x - y)

Other Identities:-

➡ (a + b)² = a² + 2ab + b²

➡ (a - b)² = a² - 2ab + b²

➡ (a + b)³ = a³ + b³ + 3ab(a + b)

➡ (a - b)³ = a³ - b³ - 3ab(a - b)