exam Maths Puzzle Numerical Ability

solve the equation by completeing the square

a2(squared)-12a+27=0

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exam Other Question

Solve 5-3/4(3x-1)= 5/8(3-2x)for x.

Please help. Thanks. what is the answer to A grocer mixes two kinds or nuts. One kind costs $5.00/kg and the other $5.80/kg. How manykilogramsof each type are neededto make 40kg of a blend worth $5.50.