Question

b) Find the square of (x+3y)​

Answer 1

$\sf{(x + 3y) {}^{2} }$

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

$\sf{ {(x)}^{2} + (3y) {}^{2} + 2(x)(3y)}$

$\sf{ {x}^{2} + 9y {}^{2} + 6xy}$

$\sf\orange{please\:mark\:as\:brainliest............}$

Answer 2

(x+3y) ^2

=x^2 + 2(x) (3y) + (3y) ^2

=x^2 + 6xy + 9y^2

Thank, follow, brainliest

I will do the same