Question

Verify: (i) x³ + y³ = (x + y) (x² - xy + y²)
please answer fast​

Answer 1

Step-by-step explanation:

Answer =

= x³ + y³ = (x + y) (x²-xy+y²)

= By Right Hand Side

= (x + y) (x²-xy+y²)

= x³-x²y+xy²+x²y-xy²+y³

= x³+y³ = Left Hand Side

Hence Proved!

Answer 2

Answer:

Step-by-step explanation:

We know that:

$(x+y)^3=x^3+y^3+3xy(x+y)\\\\SO \ x^3+y^3=(x+y)^3-3xy(x+y)\\\\=(x+y) [ (x+y)^2-3xy]\\\\=(x+y) ( x^2+2xy+y^2-3xy)\\\\\bf = (x+y)(x^2-xy+y^2)=RHS$