Question 195690
*[Tex \LARGE z^2-6z-27=0]



*[Tex \LARGE (z-9)(z+3)=0]



*[Tex \LARGE z-9=0] or *[Tex \LARGE z+3=0]



*[Tex \LARGE z=9] or *[Tex \LARGE z=-3]



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*[Tex \LARGE 6x^2-17x+13=20-32] 



*[Tex \LARGE 6x^2-17x+13=-12]



*[Tex \LARGE 6x^2-17x+13+12=0]



*[Tex \LARGE 6x^2-17x+25=0] ... doesn't factor