Question

the sum of three numbers in ap is 12 and the sum of there cube is 288 find the number

Answer 1

hey mate!

let the three nos. be a-d, a+d

so, a-d+a+a+d=12
3a=12
a=12/3
a=4
(a-d)^3+a^3+(a+d)^2=288


now you can substitute the value of a in the equation and solve for d

hope it helps!!