Question

(x + 3y)2 = x2 +
+9y2​

Answer 1

( x + 3y ) ²

Using the identity

• ( a + b ) ² = a² + 2ab + b²

( x ) ² + 2 x X x 3y + ( 3y ) ²

x² + 6xy + 9y² ➡ Answer