Evaluate: 23+-45+13+25
Firstly group the rational numbers with same denominators
23+13+-45+25=2+13+-4+25=33+-25=1-25
By taking LCM for 1 and 5 we get, 5
1×51×5-2×15×1=55-25=5-25=35
Hence, 23+-45+13+25 is 35.
Compare the given fraction and replace '□'by an appropriate sign '<or>'
27□25
If f=x1+x2+13(x1+x2)3+15(x1+x2)5+... to ∞ and g=x−23x3+15x5+17x7−29x9+..., then f=d×g. Find 4d.
The sum of the series 23!+45!+67!+... to ∞ = ae. Find (a+3)2.