Question

1
= (252) 2 - 8(53) 3 +(34)4 +15x(25) 5
2
3
4
5
= 252 - 8 53 +34 +15x 25 = 25 - 8 X 5 + 3 + 15 X 2
= 25 - 40 + 3 + 30 = 58 - 40 = 18
1
22. Rationalise the denominator of
and hence evaluate by
√3+√2
2 = 1.414and V3 = 1.732, up to three places of decimal. [NCERT Ex
Sol. Rationalising the denominator, we get
13-2 13-2
√3+√ √3-√2 (13)2 – (12)
13-2
= √3-√2
3-2
1
Substituting the values of V3 and V2, we get 1.732 - 1.414 = 0.31
1
1
93 x 27 2
23. Simplify:
[NCERT​

Answer 1

Answer:

use a calculator or use your own brain