Question

Solve the following quadratic function by utilizing the square root method. y = 16 – 4x2 ​

Answer 1

Let's do

• y=16-4x²

Let y be 0

• -4x²+16=0
• -4x²=-16
• 4x²=16
• x²=4
• x=±2

Answer 2

we have

y=16-4x²

4x²=16

x²=
`(16)/(4)`

x=
`√(4)`

x=±2