Question

The expression x^3 -y has a value of 20
Write the values of x and y such that the equation holds true.

Answer 1

Answer:

x=3 and y=7

Step-by-step explanation:

${x}^{3} - y = 20 \\ x = 27 \\ y = 7$

now let us come to our simple explanation

i have solved it using trial and error methods.

so after 3 consecutive trials, starting value of x from 1, i got the number 3 whose cube (i.e.) 3³=27 and then i thought that there is no exception with y (eg. of cine or square), so, i got the result that if you=7, then i could get the answer 27-7=20, therefore, i got my LHS=RHS.

hope it helps you