exam Maths Puzzle Numerical Ability

Solve for each equation.
-2x^2-5x+12=0

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exam Other Question

I need help with this because it just hasent been comeing out right i asked my friend but he dosent know. And its just intercepts its hard. Write an equation of a line that is perpendicular to y = 2x + 3 and
passes through (3,4).