Answer:
Add 25 to both sides
Step-by-step explanation:
to complete the square for x² + 10x = 4
Add the number that is the square of half the coefficient of x.
Coefficient of x = 10 ⇒ half of 10 = 5
5² = 25
Add 25 to both sides:
⇒ x² + 10x + 25 = 4 +25
Factor left side:
⇒ (x + 5)² = 29
Additional information
to solve (x + 5)² = 29
Square root both sides:
⇒ x + 5 = ±√29
Subtract 5 from both sides
⇒ x = -5 ± √29
