Question 929815
<pre>
Rewrite:

{{{2a^2+4ab}}}

by replacing the letter "a" by {{{(-3)}}} and replace the letter "b"
by {{{(4)}}}:

{{{2(-3)^2+4(-3)(4)}}}

There's nothing to do in the parentheses so do the exponent {{{(-3)^2}}}
which is 9, so replace the {{{(-3)^2}}} by {{{(9)}}}:

{{{2(9)+4(-3)(4)}}}

Multiply the {{{2}}} by the {{{(9)}}} and get {{{18}}} so 
replace the {{{2(9)}}} by {{{(18)}}}:

{{{(18)+4(-3)(4)}}}

Multiply the {{{4}}} by the {{{(-3)}}} getting {{{-12}}} so
replace the (((4(-3)}}} by {{{(-12)}}}:

{{{(18)+(-12)(4)}}}

Multiply the {{{(-12)}}} by the {{{(4)}}} getting {{{-48}}} so
replace the ((((-12)(4)}}} by {{{(-48)}}}:

{{{(18)+(-48)}}}

Positive eighteen and negative 48 give final answer:

{{{-30}}}

Edwin</pre>