exam Maths Puzzle Numerical Ability

(square root 13 + square root z) (square root 13 - square root z)

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exam Other Question

Which describes the number and type of roots of the equation x(squared)-625=0? bill has $3.75 in quarters,dimes,and nickels. he has twice as many quarters as dimes and three more dimes than nickels. find how much of each coin bill has.