Exam 98-381 topic 1 question 20 discussion

Actual exam question from Microsoft's 98-381

Question #: 20
Topic #: 1

DRAG DROP -
You are writing a Python program that evaluates an arithmetic formula.
The formula is described as b equals a multiplied by negative one, then raised to the second power, where a is the value that will be input and b is the result.
You create the following code segment. Line numbers are included for reference only.

You need to ensure that the result is correct.
How should you complete the code on line 02? To answer, drag the appropriate code segment to the correct location. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
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by nowisthetime at July 20, 2020, 11:34 a.m.

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gargaditya

Highly Voted 4 years, 7 months ago

Just a small correction in question,starting bracket ( missing for the input statement a=eval(input("Enter a number for the equation: "))

upvoted 7 times

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BeeM

Most Recent 4 years, 1 month ago

can somebody tell me why it is not -(a)**2. The difference is that one result is negative and the other positive. The question doesnt state what form the result should be in

upvoted 2 times

ben09007

3 years, 6 months ago

It says a must be multiplied by negative one first then raised to the second power. The orders of operations are parenthesis then exponents then multiplication. In your equation, a is being raised to the second power first because the parenthesis in your formula doesn't do anything, when the question asks that you first multiply by negative one. So (-a)**2 is the correct answer.

upvoted 6 times

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