CT 25: Identities – I

1.If  equal to?

2. What is equal to ?

3. Consider a question and two statement :

Question :

Is  always greater than  (x ≠ y ≠ 0)?

Statement – I : x > y

Statement – II : x² + y² > 2xy

Which one of the following is correct in respect of the question and the statements?

4. Simplify the expression  provided (s + t + u) ≠ 0.

5. If  Then, what will be value of the following equation

6. If (s − a) + (s − b) + (s − c) = s, then the value of will be

7. If x + y + z = 19, x² + y² + z² = 133 and xz = y², then the difference between z and x is:

8. If will be closest to∶

9. If then find x⁸

10. What is the value of