exam Maths Puzzle Numerical Ability

solve by using the quadratic formula?

5x^2+5x=3

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exam Other Question

The bending moment m of a simply supported beam of length L with a uniform load of w kg/m at a distance X from one end is M = 0.5wLx - 0.5wx^2. For what values of x is M = 0? Around a rectangular garden of length 10 metre and width 5 metre, a road 1 metre wide is laid.The cost of metalling the road at $200 per metre^2 is

(a)$3400 (b)$6000 (c)$6800 (d