exam Maths Puzzle Numerical Ability

i have to find the coordinates of the vertex of y=3.5x^+2x-8

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exam Other Question

Find a polynomial equation with real coefficents that has the given roots. 1,2 -3i Find the area under the normal distribution curve to the right of z= -3.24

Can I do this without a calculator? If not, how do I do it with a calculator?
Nancy