Question

If x - y = 12 and xy = 27. find the value of x³+y³

Answer 1

Answer:

Step-by-step explanation:

(x+y)^3=x^3+3x^2y+3xy^2+y^3

= x^3+y^3+3xy(x+y)

x^3+y^3=(x+y)^3-3xy(x+y)

= (12)^3-3(27)(12)

=1728-972

x^3+y^3=756