Answer:
third option
Step-by-step explanation:
Given
x² + 4x - 4 = 0 ( add 4 to both sides )
x² + 4x = 4
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 4 + 4, that is
(x + 2)² = 8 ( take the square root of both sides )
x + 2 = ±
= ± 2
( subtract 2 from both sides )
x = - 2 ± 2
Answer:
The Answer to the question is C
Step-by-step explanation:
Answer:
186.4056
Step-by-step explanation:
Used a calculator, this is correct
Answer:
2400sq ft
Step-by-step explanation:
20×2 and 30×2
40×60
2400 sq ft