jaikulkarni jaikulkarni
  • 26-04-2017
  • Mathematics
contestada

State how many imaginary and real zeros the function has. f(x) = x3 + 5x2 + x + 5

Respuesta :

isentrixx
isentrixx isentrixx
  • 26-04-2017
1 imaginary & 2 reals

Hope I helped! ( Smiles )
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 26-04-2017
we factor by grouping

f(x)=(x³+x)+(5x^2+5)
f(x)=x(x²+1)+5(x²+1)
undistribute x²+1
f(x)=(x+5)(x²+1)
set each to zero
0=x+5
x=-5

0=x²+1
-1=x²
i=x

1 real root and 1 imaginary root
Answer Link

Otras preguntas

How did the political impacts of the great depression differ in the united states and in germany
Why did sun yat sen begin receiving help from the communists
Which is a common type of map projection? distorted digital curved-surface equal-area
An investment that yielded 6% simple interest came due at the end of the year. Dominic received a check for the total amount (interest plus principal) of $169.6
Identify three of the seven common neurotransmitters and the functions of each. Then describe what each neurotransmitters controls or regulates in the body.
Does it matter if terrorism happens during war or peacetime
A cross section is the intersection of a and a
please help with question tagged below. thank you
The points (-3, 5) and (3,5) are two verticles of a square. list all other order pairs that could be the other two verticles of the square.
Give me two.............. of bread .( put the suitable partitive expression)​