exam Maths Puzzle Numerical Ability

Use three or more sentences to describe how you would solve the following equation using the quadratic formula. 2x2-13x-7=0

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How do you divide this. Someone Help. THANK YOU.
(2x3 - x2 + 3x -1) ÷ (x + 2)
The demand and supply equations for a certain item are given by
D = –5p + 40
S = –p2 + 30p – 8
Find the equilibrium price.