book Maths Puzzle Numerical Ability

Hi, I really need some help!

Write a quadratic equation with -7 and 5 as its roots.

Thank You!!!

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book Other Question

A boy walks home from school in 30 minutes. His brother takes 40 minutes to walk home. His brother left 5 minutes before he did. In how many minutes will the boy overtake his br How would you factor x^2 + 10x + 8. It is part of a larger problem I am having alot of trouble with