exam Maths Puzzle Numerical Ability

Solve equation. w^3+5w-w=5

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exam Other Question

A company makes three types of backpacks for a cost of $754 for 100 backpacks. Production costs for the three types are $5, $8, and $12. They sell for $20, $30, and $50 respectively. How many of each type are made if the profit is $2226? Find the constant term to make x^2-4x a perfect square trinomial