Solution:
The expression in the image is $$ 4\sqrt{25} $$.To solve this, you need to determine the square root of 25 and then multiply the result by 4.The square root of 25 is 5 because $$ 5^2 = 25 $$.Now, multiply 5 by 4 to get the final answer.$$ 4 \times 5 = 20 $$.So, $$ 4\sqrt{25} = 20 $$.