Question

x(a+x)+3x(a+1)+3(x²+xy+y²)​

Answer 1

• $x\left(a+x\right)+3x\left(a+1\right)+3\left(x^2+xy+y^2\right)=4x^2+4ax+3xy+3x+3y^2$

Espero ayudarte✨