zaid2820
zaid2820 zaid2820
  • 24-03-2022
  • Mathematics
contestada

For what values of x will the function f(x) = 5x^2 + x - 6 equal zero?

A)x = -3 or 2

B)x=6/5 or -1

C)x = 3 or -2

D)x = -6/5 or 1

Respuesta :

isalep93 isalep93
  • 24-03-2022

5x² + x - 6 = 0

Δ = 1² - 4*5*(-6) = 121 = 11²

x' = (-1 - 11) / (2x5) = -12/10 = - 6/5

x" = (-1 + 11) / (2x5) = 10/10 = 1

=> D

Answer Link

Otras preguntas

what is this -> 14y - 51=187 + 4y is y =17 the solution to the equation ? you need to show or write how u know ?? PLEASE help ?!
Find the vertex F(x)=5x²-10x+3
A liquid changes rapidly into a gas at the liquid’s?.
What role did the geography of the sahel play in the rise of the medieval African kingdoms?
About 13 out of 20 homes have a personal computer. On a street with 60 homes, how many would you except to have a personal computer?
Tomas wants to buy a new baseball bat. The one he likes costs $130, but it is on sale for $104. What is the percent of the discount Tomas will get if he buys th
35 girls and boys went walking. The ratio is 5 girls to every 2 boys. How many boys are there?
Why did the Supreme Court overturn Brown v. Board of Education?
rate as a unit rate $8 for 2 pounds of rice
how does Laius die in Oedipus Rex