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Here each square root radical should be simplified further.

√25 = √(5 * 5). Now pull out the number which is repeating twice inside the radical.

This gives:

And we already have

So, √25 * √144 = 5 * 12 = 60.

Hence the value of the expression, √25 * √144is = 60.

Here each square root radical should be simplified further.

√18 = √(2 * 3 * 3). Now pull out the number which is repeating twice inside the radical.

This gives: √18 = 3√2 and here ‘18’ is a not a perfect square since its square root gives a number in the radical.

And,

So, √18 * √144 = 3√2 * 12 = 36√2.

Hence the value of the expression, √18 * √144 is = 36√2.