adriannaworthen adriannaworthen
  • 20-11-2018
  • Mathematics
contestada

Find k such that (x+2) is a factor of (x^3-kx^2+3x+7k)

Respuesta :

Tom304 Tom304
  • 20-11-2018
x+2 =0
x= -2

subs x= -2 in the equation

(-2)^3 - k(-2)^2 +3(-2) +7k = 0
-8 - 4k - 6 +7k =0
3k = 14
k= 14/3
Answer Link

Otras preguntas

what words would you describe persistence as an acrostic poem?
how do you graph y=lxl - 3 please explain
who was the last czar of russia
Pick the answer that most likely represents the substances’ relative solubilities in water. (A) CH₃CH₂CH₂CH₃ < CH₃CH₂CH₂OH < HOCH₂CH₂OH (B) CH₃CH₂CH₂OH &l
how does Jefferson describe the effect of slavery on the morals and behavior of white Virginians
What is the mass of 1 L of a gas at STP whose molar mass is 254 g/mol? a. 11.3 g b. 25.4 g c. 30.6 g d. 76.5 g e. 254 g Can you please explain with some deta
What is 6/15 reduced
who was the last czar of russia
"In a republican nation, whose citizens are to be led by reason and persuasion and not by force, the art of reasoning becomes of first importance.." meaning???
I need help with the math question.six more than the product of a Number and three is 30. What is the number?