Question

Solve the following quadratic function
by utilizing the square root method.
y = 100 – x2

Answer 1

10

Explanation:

the guy on top put -10 he's right but it's just 10

Answer 2

x = ± 10

Explanation:

To solve the equation let y = 0 , that is

0 = 100 - x²( add x² to both sides )

x² = 100 (I take the square root of both sides )

x = ±
`√(100)` = ± 10

Then solution is x = - 10, x = 10