Question

13. If x+y+z=0, show that x3 + y2 + z = 3xyz.
14. Without actually calculating the cubes, find the value of each of the following:
(1) (-12)3 + (7)3 + (5)3
(ii) (28)3 + (-15)3 +(-13)3
1
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Answer 1

Answer:

There are also organic fertilizers, such as manures, which are generally more slowly released, contain many of the essential nutrients required for plant growth and development, and also improve soil structure. Their principal limitations are their bulk, availability, odor, potential for weed seeds, and expense.