Solving Quadratic Equations

Directions: Solve each equation for x\displaystyle {x} .  If there is more than one answer to a question, type each answer, separated by a comma. Example: If your two answers are x=2 and x=-5, you would enter 2,-5

 

a)   x2−x−56\displaystyle {x}^{{2}}-{x}-{56}=0\displaystyle ={0} 

x=\displaystyle {x}=  

 

b)   4x2+24x+35\displaystyle {4}{x}^{{2}}+{24}{x}+{35}=0\displaystyle ={0}  

x=\displaystyle {x}=  

 

c)   x2+4x+1\displaystyle {x}^{{2}}+{4}{x}+{1}=0\displaystyle ={0} 

x=\displaystyle {x}=  

 

d)   x2+7x\displaystyle {x}^{{2}}+{7}{x} =\displaystyle = −6\displaystyle -{6} 

x=\displaystyle {x}=  

 

e)   (2x−5)⋅(x−3)=2x2+8x+129\displaystyle {\left({2}{x}-{5}\right)}\cdot{\left({x}-{3}\right)}={2}{x}^{{2}}+{8}{x}+{129}

x=\displaystyle {x}=  

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