Question

9x square +6xy + y square​

Answer 1

9x²+6xy+y²

We know that a²+2ab+b²=(a+b)²

=>(3x)²+2×3x+y+(y)²

=>(3x+y)²

=>(3x+y)(3x+y)

Answer 2

${\huge{\green{\underline{\underline{\pink{Aηѕωєя \: :}}}}}}$

9x²+6xy+y² = (3x)² + 2(3x)(y)+(y)²

Using identity I

= (3x+y)²=(3x+y)(3x+y)

${\huge{\red{\underline{\overline{\mathscr{\red{Hope \: This \: Helps \: You}}}}}}}$