Question

Sorry am dumb I need help pls hurry:/

Answer 1

Answer:

x = ±20

Step-by-step explanation:

Step 1: Write equation

x² = 400

Step 2: Square root both sides

x = ±√400

x = ±20

Step 3: Check

Plug in x to verify it's a solution.

20² = 400

400 = 400

(-20)² = 400

400 = 400

Answer 2

Ok What question do you need help on