exam Maths Puzzle Numerical Ability

Can you help me with this problem?

Plot the points P(1, 5), Q(3, 5), and R(1, 7) on a coordinate plane.
(a) Where must point S be located so that the quadrilateral PQRS is a sq

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exam Other Question

I made a mistake on the last one I turned in. It was number 10 on page 196 not 18.

But now this is number 18:

Page 196 Number 18

four less than seven times a number
write a polynomial of the 5th degree that has the given numbers as its zeros: -2, -1, 0, -2i. multiply all factors out, do not leave in factored form.