Question

Make x the subject of the formula.

y = ax2 +b​

Answer 1

x = ±
`\sqrt{(y-b)/(a) }`

Explanation:

Given

y = ax² + b ( subtract b from both sides )

y - b = ax² ( divide both sides by a )

`(y-b)/(a)` = x² ( take the square root of both sides ), thus

x = ±
`\sqrt{(y-b)/(a) }`