lexi02238
lexi02238
07-08-2017
Mathematics
contestada
x^2-9x-36=0, how do I solve this
Respuesta :
kphung76127
kphung76127
07-08-2017
Factor it out.
(x-12)(x+3)
Proof:
-12+3=-9
-12*3=-36
To find zeros:
x-12=0
x=12
x+3=0
x=-3
Final answers for roots: {-3, 12}
Answer Link
Banabanana
Banabanana
07-08-2017
x² - 9x - 36 = 0
x² + 3x - 12x - 36 = 0
x(x+3) - 12(x + 3) = 0
(x+3)(x-12) = 0
x+3 = 0 or x-12 = 0
x = -3 x = 12
Answer: x=-3, x=12
Answer Link
VER TODAS LAS RESPUESTAS ( 99+ )
Otras preguntas
One solution is 10% acid and another is 4% acid. How many cubic centimeters (cc) of each should be mixed to obtain 150 cc of a solution that is 6% acid?
Construct a line segment to each given line segment
Please help!! Its a Geometry Question I do not understand.
Simplify the expressions below as much as possible. 2a + 4(7 + 5a) 4(3x + 2) − 5(7x + 5) x(x + 5) 2x + x(x + 6)
what is 56.398 rounded to the nearest tenth
Why did direct democracy work for the Ancient Greek city of Athens
Which best explains why Melville refers to Captain Ahab as “supreme lord and dictator” in the first paragraph of Chapter 28 of Moby-? to show that Captain Ahab
Which number is greater than 7.23 and less than 7.55
how cloning effects genetic diversity and that happens? does the genetic diversity increase decrease?
How does the economy of Cuba differ from the economy of North Korea? In North Korea, the government’s control of the economy has begun to loosen. In Cuba, the g
