exam Maths Puzzle Numerical Ability

Problem:
Insert grouping symbols in the proper place so that the given value of the expression is obtained. The value of the expression should be 28.



5 - 3 x 2 + 8 x 5 -

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exam Other Question
Think about a real-life situation that follows a linear equation, with the independent variable being years. What would the slope tell you about future years?
Answer: It would d Verify that P(x) = x^3 - x^2 - ix^2 - 20x + ix + 20i has a zero of i and that its conjugate -i is not a zero. Explain why this does not contradict the Conjugate Pair Theorem.