Answer:
a =6
b=4
c=2
step-by-step explanation:
[tex]\sqrt{x^{12} y^{9}z^{5} }[/tex] = [tex]\sqrt{x^{12} y^{8}y z^{4} z}[/tex] = [tex]\sqrt{(x^{6}) ^{2} (y^{4}) ^{2} (z^{2})^{2} yz }[/tex] = [tex]x^{6}y^{4} z^{2} \sqrt{yz}[/tex]