Make $$\(y\)$$ the subject of the formula. $$\[ h^{2}=x^{2}+2 y^{2} \]$$ $$\[ y=.................. \]$$
Exam No：0580_s20_qp_22 Year：2020 Question No：19
Answer:
\([\pm] \sqrt{\frac{h^{2}-x^{2}}{2}}\)
Knowledge points:
E2.1.1 Use letters to express generalised numbers and express basic arithmetic processes algebraically.
E2.1.2 Substitute numbers for words and letters in complicated formulae.
E2.1.3 Construct and rearrange complicated formulae and equations. (e.g. rearrange formulae where the subject appears twice.)
Solution:
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