book Maths Puzzle Numerical Ability

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I'm really stuck on two problems I have to do and have no idea how to solve them.The first one is a quadratic equation (i think). it says find all solutions to the equati

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This is my question please help me resolve it. Thank you

Mr chanung decided to go to cinema to see a movie with his family...He has two option he can either go to the CINEPLEX f
Can you help me factor this polynomial?
18c^4 - 9c^2 + 7c