Question

(x + 3y)^2 - 4x - 12y

pls answer this question correctly if u know then only pls its a request plsI'll mark the answer as brainlist pls​

Answer 1

$( x + 3y )^{2} - 4x - 12y \\ \\ = {x}^{2} + {(3y)}^{2} + 2(x)(3y) - 4x - 12y \\ \\ = {x}^{2} + 9 {y}^{2} + 6xy - 4x - 12y$

Answer 2

Given :-

(x+3y)² - 4x - 12y

solution:-

= ( x+3y) (x+3y) -4x -12y

= x (x+3y) +3y ( x+3y) - 4x - 12y

= x² +3xy +3y ( x + 3y) - 4x - 12y

= x² + 3xy +3xy + 9y²-4x - 12y

( Now add the terms )

x² + 6xy + 9y² -4x -12y

is the ans