<PRE><B>Question 1177209</B>
.
&lt;pre&gt;

(s-t)(x) = (4x+2) - 5x = -x + 2.                       &lt;U&gt;ANSWER&lt;/U&gt;


(s*t)(x) = (4x+2)*(5x) = 5x*(4x-2) = 20x^2 - 10x.      &lt;U&gt;ANSWER&lt;/U&gt;


(s+t)(1) = 4*1 + 2 + 5*1 = 4 + 2 + 5 = 11.             &lt;U&gt;ANSWER&lt;/U&gt;
&lt;/pre&gt;

Solved.  &amp;nbsp;&amp;nbsp;// &amp;nbsp;&amp;nbsp;All questions are answered.



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