exam Maths Puzzle Numerical Ability

Perform the indicated division. Rationalize the denominator if necessary. Then simplify each radical expression.

6-sqrt(20) divided by 2

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exam Other Question

((a+b)^2)-((a-c)^2) solve to the least common factor. The hypotenuse of a right triangle exceeds the longer of the two legs by 2. If the perimeter of the triangle is 40, find the lengths of the sides of the triangle.