<PRE><B>Question 1206797</B>


{{{u}}} = &lt;{{{0}}},{{{ 7}}}&gt;
{{{v}}} = &lt;{{{-9}}},{{{ 0}}}&gt;


{{{2u}}} =&lt;{{{2*0}}}, {{{2*7}}}&gt;=&lt;{{{0}}}, {{{14}}}&gt;

{{{-3v }}}= &lt;{{{(-3)(-9)}}},{{{ (-3)*0}}}&gt;=&lt;{{{27}}}, {{{0}}}&gt;

{{{u + v}}} =&lt;{{{0+(-9)}}}, {{{7+0}}}&gt;=&lt;{{{-9}}},{{{ 7}}}&gt;

{{{3u - 4v }}}=&lt;{{{3*0-4(-9)}}}, {{{3*7-0*(-9)}}}&gt;=&lt;{{{0+36}}}, {{{21-0}}}&gt;=&lt;{{{36}}}, {{{21}}}&gt;
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