∵x满足不等式3x+5≤0∴3x≤-5,x≤-5/3,x为负值∵4/15*√(3y/2x)÷M=1/2√(xy/2)∴4/15*√(3y/2x)÷[1/2√(xy/2)]=M∴M=8/15*√[(3y/2x)/(xy/2)]=8/15*√[(3y/2x)*2/(xy)]=8/15*√(6/x²)=8√6/(15|x|)=-8√6/(1...