nurulfalisha nurulfalisha

04-08-2021
Mathematics

contestada

plss helppp!!

pls show how is it done

solve the equation :

x³ = 3x² + 3x - 1

Respuesta :

mhanifa mhanifa

04-08-2021

Answer:

x³ = 3x² + 3x - 1
x³- 3x² - 3x + 1 = 0
(x³ + 1) - 3x(x + 1) = 0
(x + 1)(x² - x + 1 - 3x) = 0
(x + 1)(x² - 4x + 1) = 0
(x + 1)(x² -4x + 4 - 3) = 0
(x + 1)((x - 2)² - (√3)²) = 0
(x + 1)(x - 2 + √3)(x - 2 - √3) = 0

x = -1
x = 2 - √3
x = 2 + √3

Answer Link

Otras preguntas

Help pleaseeeeeeeeee

I need help setting up this problem. Please help me.

A_____ is a separate compartment in a waterway where water levels are raised or lowered

Great introduction about the affect of social media

Two benefits of doing scarce skills

whats the quotient 2x − 3 x ÷ 7 x2

how to resolve this problem?

quadrilateral ABCD is a parallelogram with diagonals that intersect at point E. Which of the following statements is true?

what is the greatest prime factor of 3^8+4

In 2004, a pine tree was 5 3/4 ft tall. If the tree grew at an average rate of 5/6 ft per year for the next 7 years, how tall would the tree have been in 2011?