Answer: 
-3 times the square root of 5
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Explanation:
Let 
Replace all the root 5 terms with x and we go from

to

From here, combine like terms to get

and the last thing to do is replace the x with sqrt(5)

Meaning that,


The answer is b , because 2/3 has more numbers in its decimal than the others
<span>85×3×4÷1+45-3×4= </span>1053
Step-by-step explanation:

in this we have given the value of f(x) = 15



so this is ur answer
hope it helps .