Factoring Quadratic Expressions using Trial and Error
Completely factor each of the following quadratic expressions using Trial and Error. Note: All of these expressions will factor. There are no prime quadratics listed.
x2+17x+72\displaystyle {x}^{{2}}+{17}{x}+{72}

Factored Form

  		x2−36\displaystyle {x}^{{2}}-{36}

Factored Form

 
x2−x−72\displaystyle {x}^{{2}}-{x}-{72}

Factored Form

  		x2−8x+16\displaystyle {x}^{{2}}-{8}{x}+{16}

Factored Form

 

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