exam Maths Puzzle Numerical Ability

simplify:

(4x^3+x^2-3)-(-9x^3+5x^2-5)

thank you for your help

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exam Other Question

Leilani adn Malu opened their R&J Recycling station one month ago, and already they have 7,000 tons of galactic debris for sale. THey have collected five times as many 4-ton bins 16=5(1-x)