book Maths Puzzle Numerical Ability

3y5y-3

(x-3)(x2)(x-1)

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I have no idea how to solve this question sqrt2y^2 - 3y - 10 = y can someone help me? The model for body-heat loss depends on the coefficient of convection K, which depends on wind speed s according to the equation Ksquare=16s+4, where s is in miles per hour. Find