Question 324692
1. {{{a^2+b^2=c^2}}}
a=6
b=8
{{{6^2+8^2=c^2}}}
{{{36+64=c^2}}}
{{{100=c^2}}}
{{{10=c}}}
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2. {{{l=3+w}}}
{{{c=15}}}
{{{l^2+w^2=c^2}}}
{{{(3+w)^2+w^2=15^2}}}
{{{w^2+6w+9+w^2=225}}}
{{{2w^2+6w+9=225}}}
{{{2w^2+6w-216=0}}}
{{{2(w^2+3w-108)=0}}} -9*12=-108 12-9=3
{{{2(w-9)(w+12))=0}}}
{{{highlight(w=9)}}},{{{cross(-12)}}}
{{{highlight(l=12)}}}