Answer:
(x + 9)² = 36
Step-by-step explanation:
Given
x² + 18x + 57 = 12 ( subtract 57 from both sides )
x² + 18x = - 45
To complete the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(9)x + 81 = - 45 + 81
...... idk
.45x + 1.75 < 12
.45x < 10.25
x < 22.7 miles
800 ft are in 800 sq ft.
DA=13.................
