Question: Problem in solving differential equation

Hi I want to solve the following equation. For this I have written the following program. But Maple showing error.

eq := diff(x(t), `$`(t, 2))+326.1*(diff(x(t), `$`(t, 1)))+3190*(diff(x(t), `$`(t, 1)))^2-37500*sqrt(x(t)*(0.165e-2-x(t)))+2.825

ICs := x(0), Dx(0)-0

sol := dsolve({ICs, eq}, {x(t)}, type = numeric);

but it is showing 

Error, (in dsolve/numeric/process_input) system must be entered as a set/list of expressions/equations


Please help

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