exam Maths Puzzle Numerical Ability

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solve by using quadratic formula

x^2-4X-60=0

x=1(-4)+- radical 4^2+4*1*(-60)/2*1

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exam Other Question
Find m(x+h)-m(x)/h with the given m(x)=2x^2+5x+3 Need help, find the domain of the composite function f*g; f(x)=^/x;g(x)=4x+4
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