1.

Find the factors of \[3{{z}^{2}}+9z+6\].

A.  \[3(z+1)\,(z+2)\]
B.  \[4(z+2)(z+3)\]
C.  \[2(z+3)\,(z+1)\]
D.  \[3(z+5)\,(z+5)\]
Answer» B.  \[4(z+2)(z+3)\]


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