exam Maths Puzzle Numerical Ability

How can I Solve 25(2x+1)^2/9=0 ?

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exam Other Question

A rod of 5 m at 6c grows to 5.006 m when the temperature is raised to 48c. Find the coeffcient of volumetric expansion of the unknown composing the rod. find the values for me and b in the following system so that the solution to the system is (-3,4)
5x+7y=b
mx+y=22