Answer: i think its 82 but im not sure
Step-by-step explanation:
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
(x + 9)² = 36
I believe the correct answer is D
A right angle is 90*
so 90/360 is da ansa XD ansa