Question

the value of x 3 −8y 3 .,when x=2,y=-1​

Answer 1

Answer:

39

Step-by-step explanation:

x3-8y3

2×3-8×(-1)×3

6+8×3

13×3

answer=39

Answer 2

• As per the data given in the question, we have to find the value of the expression.

             Given data:- $x=2$ and $=-1.$

             To find:- Value of $x^{3} -8y^{3} =?$

             Solution:-

• We have a value of $x=2$ and $y=-1.$

• So that put the values in the given equation we get,

                $x^{3} -8y^{3} \\=2^{3} -8(-1)^{3} \\=8-8(-1)\\=16.$

     Hence we will get the value $x^{3} -8y^{3} =16.$