exam Maths Puzzle Numerical Ability

Find the equation of a quadratic polynomial passing through the following points: (-1,2) (-5,2) and (6,8)?

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exam Other Question

A carpenter used 30 ft of molding in three pieces to trip a garage door. If the long piece was 2 ft longer than twice the length of each shorter piece then how long was each piece?
Find all real and imaginary solutions to the equation.

b^4+13b^2+36=0