Question

factories by using identities : 49x²-64y²​

Answer 1

Answer:

49x^2-64y^2

(7x)^2-(8y) ^2

(7x+8) (7x-8)

Answer 2

49x² - 64y²

We know that, a² - b² = (a - b)(a + b)

So, 49x² - 64y² = (7x)² - (8y)²

= (7x - 8y)(7x + 8y)

∴ The factorised form of 49x² - 64y²

= (7x - 8y)(7x + 8y)