anagloriasantos21 anagloriasantos21
  • 28-02-2021
  • Mathematics
contestada

If f(x) = x3+ x2and g(x) = x4+ x2+ x, what is the value of f(x) –g(x) when x = 1?
A) -2
B) -1
C) 1
D) 5

Respuesta :

gmany
gmany gmany
  • 28-02-2021

Answer:

B) -1

Step-by-step explanation:

[tex]f(x)=x^3+x^2\\\\g(x)=x^4+x^2+x[/tex]

METHOD 1

[tex]f(x)-g(x)=(x^3+x^2)-(x^4+x^2+x)=x^3+x^2-x^4-x^2-x\\\\=-x^4+x^3-x\\\\x=1\\\\-1^4+1^3-1=-1+1-1=-1[/tex]

METHOD 2

[tex]x=1\\\\f(1)=1^3+1^2=1+1=2\\\\g(1)=1^4+1^2+1=1+1+1=3\\\\f(1)-g(1)=2-3=-1[/tex]

Answer Link

Otras preguntas

Fill in the other coordinate for the line 2x−5y=11 (2, )
explain why the printing of the money would not help the farmers who were protesting in shay's rebellion.
154 mi/h = ▪️ in./s I think I did this wrong I got 81,312
During the Reconstruction era, groups such as the "White League" and the "Red Shirts" sought to A) end segregation and "Jim Crow" policies. B) overthrow Republ
44 is 88% of what number?
How to do this??? Need this for test tmr.
which element has the most metallic character, silicon sodium sulfur or thallium?
The amount of time needed on an activity, depends on how vigorous the activity is: True or False?
Electricity can travel in a(n) _______ circuit. electromagnetic closed open short
Who won the duel between Hamilton and Burr? A) Hamilton B) Burr C) It was a tie. D) The duel never took place.