Question 1125246
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18a+25b					                                                                                           a+9b
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18a *(with a square of 2) +25ab-3b* (with a square of 2)	   4a *(with a square of number 2) – 9b *(with a square of number 2)

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OR as you tried to show
<pre>
18a+25b					                                                                                           a+9b
-----------------------------------------------------    -	  ------------------------------------  	
18a *(with a square of 2) +25ab-3b* (with a square of 2)	   4a *(with a square of number 2) – 9b *(with a square of number 2)

</pre>


To write your expression PROPERLY,  do in pure text like this:

(18a+25b)/(18a^2+25ab-3b^2)-(a+ab)/(4a^2-9b^2)



or same as
{{{(18a+25b)/(18a^2+25ab-3b^2)-(a+ab)/(4a^2-9b^2)}}}