exam Maths Puzzle Numerical Ability

Remove the paranthesis.
-(3x+5y)

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exam Other Question

Write the quadratic equation with a lead coefficient of 1 whose roots are 1+3i and 1-3i.

Could someone show me how to this step-by-step, please?
express the solution in exact form

ln(-x)+ ln 3=ln(3x-9)