Question 434358


1.
{{{ -3x^2+21x}}}

{{{ 3x(-x+7)}}}

2.
{{{ x^2-16}}}

{{{ x^2-4^2}}}

{{{ (x-4)(x+4)}}}


3. 
{{{x^2-10x+24}}}

{{{x^2-4x-6x+24}}}

{{{x(x-4)-6(x-4)}}}

{{{(x-6)(x-4)}}}


4. 

{{{x^2-6x}}}

{{{x(x-6)}}}