Question

Factorise:-(By using Identity)
(a+2b) - a²​

Answer 1

$(a + 2b)^{2} - (a)^{2}$

$(a + 2b + a)(a + 2b - a)$

$(2a + 2b)(2b)$

$2(a + b)(2b)$

$2 \times 2b(a + b)$

$4b(a + b)$

This is your answer

Answer 2

$= (a + 2b) ^{2} - {a}^{2}$

$= (a + 2b) ^{2} - ( {a})^{2}$

$= (a + 2b + a)(a + 2b - a)$

$= (2a + 2b)(2b)$

$= 2(a + b)(2b)$

$= 2 \times 2b(a + b)$

$= 4b(a + b)$