Following the proper order of operations, 9-5^2 x 4 = 9-25x4=9-100=-91
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4 goes into 20 5 times, so the answer is 5.
4 times the square root of 7
It is: 4 times the square root of 6
4 times the square root of 3.
If it is: 81/4 times sq rt of 3 Then it could be: 20.25 times sq rt of 3