Question

4. Without actually calculating the cubes, find the values of:
(1) (-15)3 + 93 +63
(i) (0.2)3 - (0.3)3 + (0.1) 3 (NCER
5. Ifr + 1 = 8 and x - y = 2, find the value of 2x2 + 2y2.
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Answer 1

answer 1.

-45+93+63

-45+156

-111

2.

0.6-0.9+0.3

0.6-1.2

0.6

Answer 2

Answer:

I hope it helps you.....