Question

x2 + y2 + x + y + 2xy factorise by grouping method ​

Answer 1

Answer:

(x+y)(x+y+1)

Step-by-step explanation:

x²+y²+x+y+2xy

= x²+2xy+y² + x+y

= (x+y)² + (x+y)

= (x+y)(x+y) + 1(x+y)

= (x+y)(x+y+1)