exam Maths Puzzle Numerical Ability

Apply using the quadratic formula to find the roots of the given function, graph the function.

f(x) = x^2 - 4

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exam Other Question

(-7b^3+2b-3)(5b^2-2b+4) Help Me Figure How To Multiply This Polynomial!! you have $50,000 to invest, you invest some at 5% and the rest at 4%. you earn $2100 in annual interest, how much did you invest at each rate?