What is the value of (a2 + b2 + 4c2 - ab - 2bc - 2ca) (a + b + 2c) ?
\(4a^3 + b^3 + 8c^3 - 9abc\)
\(a^3 + b^3 + 8c^3 - 6abc\)
\(a^3 + b^3 + 8c^3 - 8abc\)
\(a^3 + b^3 + 6c^3 - 4abc\)
The line chart given below shows the marks obtained by two students A and B in 6 subjects.
The marks obtained by A in all the subjects is what percent of the marks obtained by B in all the subjects?
The table given below shows the salary of 6 employees of a company.
| Employees | Salary |
| P | 200 |
| Q | 650 |
| R | 350 |
| S | 250 |
| T | 450 |
| U | 300 |
What is the total salary of all the employees?
what is the value of (a + b + c) { (a - b)2 + (b - c)2 + (c - a)2 } ?
If \(x + \frac{1}{x} = -2\), then what is the value of \(x^7 + x^{-7} + x^2 + x^{-2}\ (x<0)\)