Math, asked by chandrashekharc3391, 10 months ago

Find the value of x cube - y cube -15xy - 100if x -y is equal to 5

Answers

Answered by Darkrai14
131

★Given:-

x - y=5

★To find:-

The value of

x³ - y³ - 15xy - 100

★Solution:-

We know that,

(x-y)³ = x³ - y³ - 3xy(x-y)

Using this identity,

(5)³ = x³ - y³ - 3xy(5)

125 = x³ - y³ - 15xy

So - -15xy = 125

Substituting the value of x³ - y³ -15xy in the equation,

→x³ - y³ -15xy -100

→125 - 100

→25

So the value of x³ - y³ -15xy - 100 is 25

Similar questions