exam Maths Puzzle Numerical Ability

7y(3x+y^2)^19/8x(3x+y^2)^4

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exam Other Question

Solve each equation by factoring.
2x^2-7x-15=0 martin and anna buy books at a sale. martin buys 3 hardcover books and 4 paperback books for $6.50. Anna buys 2 hardcover books and 6 paperback books for $6.00. What is the cost, in dollars, of each hardcover book?