exam Maths Puzzle Numerical Ability

The section is adding/subtracting radicals. My problem is subtracting.
The equation is: The sqaure root of 120 - The square root of 270 - The square root of 300. Can you help me?

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exam Other Question
rewrtie each equation as a function of x

-3x+4y-11

Please help me to do this

thanks Find the time required for an object to fall to the ground from a building that is 1400ft high. Use t=1/4 (radical sign)s.