(X +2y)^2-16z^2factorise answer fast to get the branilest title. – InterviewSolution

1.

(X +2y)^2-16z^2factorise answer fast to get the branilest title.

Answer»

Answer :

♦Factorisation :

= (X + 2Y)² - 16z²

= (x + 2y)² - 4²z²

= (x + 2y)² - (4Z)²

Using identity a² - b² = (a - B)(a + b)

= (x + 2y - 4z)(x + 2y + 4z)

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