Question

if x-y=5 andxy=84 then find the value of x^3-y^3​

Answer 1

Answer:

1135

Step-by-step explanation:

x-y=5

$(x-y)^{3} = x^{3}- y^{3} -3xy(x-y)$

$5^{3} = x^{3} -y^{3} -3(84)(5)$

$125 =x^{3} - y^{3} - 1260$

$1135 = x^{3} - y^{3}$