Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work. 4 - x²

Question

3 years ago

12

= -16 I REALLY NEED HELP WITH THIS ITS FOR A QUIZ

1 answer:

Volgvan · Answer 1 · 2022-03-15T17:35:52+03:00

Volgvan3 years ago

5 0

Answer:

x = ±2√5

Step-by-step explanation:

4 - x² = -16

we add subtract 4 from both sides. So,

4 - 4 - x² = -16 - 4

- x² = -20

we divide both sides by -1. So,

- x²/-1 = -20/-1

x² = 20

we take square root of both sides. So,

√x² = ±√20

x = ±√5 × √4

x = ±2√5