Question 77918
<pre><font size = 5><b>
{{{(3m-5)(m+7)=0}}}
solve for m. 
Please. Thanks.

{{{(3m-5)(m+7)=0}}}

When there is a zero on the right side,
and the left side is factored, we know
that one of those factors must be 0 in
order for their product to equal 0. Since
it could be either one of them which 
equals 0, we set each of them = 0 and
we get two possible solutions.

Setting the first factor = 0:

{{{3m-5=0}}}
{{{3m=5}}}
{{{m=5/3}}}

Setting the second factor = 0:

{{{m+7=0}}}
{{{m=-7}}}

Edwin</pre>