A
(X-7)(x-4) -> x^2 -11x + 28
Multiply that by the 2 and you get the original equation!
Answer:
I ant help you but, my sister can ill get her
Step-by-step explanation:
The standard deviation is the square root of the variance...so that means the variance is the standard deviation squared.
2.3^2 = 5.29 <===
X² - 4x - 77 = 0
( x + 7) ( x - 11)
x + 7 = 0
x - 11 = 0
x = -7
x = 11
