Question

Make a the subject of the formula x²=a²-a²w²​

Answer 1

a = ±
`\sqrt{(x^2)/(1-w) }`

Explanation:

Given

x² = a² - a²w ← factor out a² from each term on the right side

x² = a²(1 - w) ← divide both sides by (1 - w)

`(x^2)/(1-w)` = a² ( take the square root of both sides )

±
`\sqrt{(x^2)/(1-w) }` = a