Is (x+3)\displaystyle {\left({x}+{3}\right)}(x+3) a factor of 6x4+22x3+17x2+15x\displaystyle {6}{x}^{{4}}+{22}{x}^{{3}}+{17}{x}^{{2}}+{15}{x}6x4+22x3+17x2+15x ?
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