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Make k the subject of the formula $y = \sqrt{2m - k}$ - Edexcel - GCSE Maths - Question 17 - 2019 - Paper 2

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Make k the subject of the formula $y = \sqrt{2m - k}$

Worked Solution & Example Answer:Make k the subject of the formula $y = \sqrt{2m - k}$ - Edexcel - GCSE Maths - Question 17 - 2019 - Paper 2

Step 1

Step 1: Square both sides of the equation

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Answer

To isolate the term containing k, first square both sides to eliminate the square root:

y2=2m−ky^2 = 2m - k

Step 2

Step 2: Rearrange the equation

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Answer

Now, rearrange the equation to isolate k:

k=2m−y2k = 2m - y^2

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