exam Maths Puzzle Numerical Ability

Divide. Rationalize the denominator if necessary. Then simplify.

6- the square root of 20 OVER 2

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20z^5 - 95z^4 + 60z^3 Directions are to solve: One integer is 6 less than the other integer. The product of the lesser integer and -7 is 42 more than the greater integer. What are the integers? My answer was 55 and 49. Am i correct?