EM-184

Changing the subject of a formula

E Math · Secondary 3 · Hard · Changing the subject of a formula

1. $p = -2k \pm \sqrt{4k^2+Hk}$
2. $p = 2k \pm \sqrt{4k^2+Hk}$
3. $p = -2k \pm \sqrt{4k^2-Hk}$
4. $p = \dfrac{Hk-4k}{2}$

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