Answer
$(3x+5)^{1/3}(2x+3)^{1/2}(17x+27)$
Work Step by Step
We simplify:
$4(3x+5)^{1/3}(2x+3)^{3/2}+3(3x+5)^{4/3}(2x+3)^{1/2}
=(3x+5)^{1/3}(2x+3)^{1/2}[4(2x+3)^{2/2}+3(3x+5)^{3/3}]
=(3x+5)^{1/3}(2x+3)^{1/2}[4(2x+3)+3(3x+5)]
=(3x+5)^{1/3}(2x+3)^{1/2}(8x+12+9x+15)
=(3x+5)^{1/3}(2x+3)^{1/2}(17x+27)$