exam Maths Puzzle Numerical Ability

(2x-4)^2=20

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exam Other Question

In a dog show there are 3 times as many collies as boxers. There are also 3 poodles for every 5 collies. What is the smallest possible number of dogs that could be in the dog show?

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Divide.

(30b^3 + 3b^2 + 42b + 30) / (6b+3)