Question

Expand (3x+2y+6)^2 using identity

Answer 1

Question

Expand (3x+2y+6)^2 using identity

Answer :

Identity used : a^2 + b^2 + c2^ + 2ab + 2bc + 2ca

To expand : (3x+2y+6)^2

Solution :

(3x+2y+6)^2

Putting into formula:

=> (3x)² + (2y)² + (6)² + 2 × 3x × 2y + 2× 2y ×6 + 2×6×2y

=> 9x² + 4y² + 36 + 12x×y + 24y +24 y

=> 9x² + 4y² + 36 + 12x.y + 48 y

Answer :

9x² + 4y² + 36 + 12x.y + 48 y