Answer:
x = ±3
Step-by-step explanation:
Step 1: Write equation
7x² = 63
Step 2: Solve for x
- Divide both sides by 7: x² = 9
- Square root both sides: x = ±3
Step 3: Check
Plug in x to verify it's a solution.
7(3)² = 63
7(9) = 63
63 = 63
7(-3)² = 63
7(9) = 63
63 = 63
