dannylle dannylle

01-05-2020
Mathematics

contestada

What are the solutions of x2 = 8 - 5x?

Respuesta :

wolf1728 wolf1728

01-05-2020

Answer:

That can be re-written:

x^2 + 5x -8 = 0

We use the Quadratic Formula

a=1

b = 5

c = -8

x = [-b +- sq root (b^2 - 4ac) ] / 2a

x = [-5 +- sq root (25 - - 32)] / 2

x1 = [-5 + sq root (57)] / 2

x1 = 1.27491722

x2 = [-5 - sq root (57)] / 2

x2 = -6.2749172176

Step-by-step explanation:

Answer Link

Otras preguntas

Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.

copy this figure onto grid paper. draw line to divide the figure into 4 congruent polygons. how do you know the ploygons are congruent

How do you do this algebra question

Jonathan has been on a diet since January 2013. So far, he has been losing weight at a steady rate. Based on monthly weigh-ins, his weight, w, can be modeled by

How long did mummification go for poor Egyptians?

what is the sum of 6 7/8 + 4 5/8

NaOH + H2SO4 =NaOH + HNO3 =Cu(OH)2 + HCl = H2SO4 = HNO3 =

A certain test is worth 155 points. How many points (rounded to the nearest point) are needed to obtain a score of 65%?

When was the battle of Hastings?

Factor completely, the expression: 2x^3-2x^2-12x