Question

If X3 +Y3 + Z3 =3XYZ and X+Y+Z =0 find the value of :- (X+Y)2/XY + ( Y +Z )2/YZ + (Z+X)2 / ZX​

Answer 1

Step-by-step explanation:

Solution : We know that x3 + y3 + z3 – 3xyz = (x + y + z) (x2 + y2 + z2 – xy – yz – zx). If x + y + z = 0, then x3 + y3 + z3 – 3xyz = 0 or x3 + y3 + z3 = 3xyz.

Answer 2

Answer:

EXERCISE 6: Join together each of the following pairs of sentences by means of Relative Pronouns. A. He does his best. He should be praised. 2. 3. 4. He is a rogue. No one trusts him. This is the building. It was built in a single month. I saw a soldier. He had lost his leg. 5. It was a wretched hut. She lived in it. 6. 7. 8. 9. Coal is found in West Bengal. It is a very useful mineral. I have found the umbrella. I had lost it. This is my cousin. I was speaking of him. Can I borrow the book? You are reading it. 10. The cat caught the mouse. The cat was pursuing the mouse.