Question

use suitable identity and find product a(square) 2b (square) square

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Answer 1

Answer:

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

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

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

Answer is

$a^{2} + 4ab + 4b^{2}$