If x(x - 5) = -1, then the value of x3(x3 - 110) = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. -1
If x(x - 5) = -1
x + 1/x = 5
Cube on both sides
x3 + 1/x3 = 125 - 15 = 110
x3(x3 - 110) = -1
SSC CPO - 11 Nov 2022 - Shift 1 • Quantitative Aptitude • Q135
If x(x - 5) = -1, then the value of x3(x3 - 110) = ?
Correct answer: B
Explanation
The correct answer is option 2 i.e. -1
If x(x - 5) = -1
x + 1/x = 5
Cube on both sides
x3 + 1/x3 = 125 - 15 = 110
x3(x3 - 110) = -1