exam Maths Puzzle Numerical Ability

If f(x)=x(x+3)(x-1), use the interval notation to give all values of x where f(x)>0.

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exam Other Question

solve equation by completing the square

x^2 + x - 5 = 0 The hypotenuse of a right triangle is 10. One side is 2 less than the other. Find the length of each leg.