Question 1056500
.
Factor the Following:


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a.  {{{49x^2-84x+36}}}  = {{{(7x - 6)^2}}}.                


b.  {{{100x^2-81y^2}}}  = (10x - 9y)*(10x+9y).


c.  {{{x^2+6x-27}}}     = (x+9)*(x-3).                 


d.  {{{15x^2+7x-2}}}    = (5x-1)*(3x+2).
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