Question

(fill up the blanks) x³ + y³ + 3xy (..............) = (x + y)³​

Answer 1

Answer:

the ans is (x+y)

Step-by-step explanation:

this is a identity in maths used commonly...

Answer 2

Answer:

Step-by-step explanation:(x+y)3= x3+y3+3xy.......(x+y)

because

as we know the identity (x+y)2=x2+3xy+y2

based on that we have (x+y)3

=(x+y)(x+y)2 we also be = to (x+y)3

= (x+y)(x2+2xy+y2)2

=(x3+2x2y+xy2)(xy2+2xy2+y3)

=x3+y3+3x2y+3xy2

this can also be written in this form

= x3+y3+3xy(x+y)

hence (x+y) is the answer..