exam Maths Puzzle Numerical Ability

Give the sum p+q where p/q is the reduced fraction represented by the repeating decimal 2.1.

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exam Other Question

Reduce each expression to the lowest terms. Show steps and solution.

This is written in fraction form:

4x^2/2x^9
Factor each of the following polynomials completely:
-3s^2 - 10s +8

I am having a hard time with this problem and need some help. Thanks.