Question

if x-y=4 and xy=5 find the value of x^3-y^3 pls answer it is urgent thanks

Answer 1

Answer:

124

Step-by-step explanation:

(X-Y) ^3 =X^3 - Y^3- 3XY(X-Y)

(4)^3 = X^3 - Y^3 - 3(5)(4)

64 =X^3 - Y^3 - 60

X^3 - Y^3 =64 +60

=124