maura2mconroy0547 maura2mconroy0547

26-01-2017
Mathematics

contestada

solve the quadratic equation x^2-2x-8=0

I have tried many ways for this one but it ends up being a ridiculous answer.

Respuesta :

PsychrolutesMarcidus PsychrolutesMarcidus

26-01-2017

Using cross multiplication

[tex] x^{2} -2x-8 =0[/tex]
(x-4)(x+2)=0
x-4=0
x+2=0

Thus x=4,-2

Answer Link

Otras preguntas

Which one of the following food contaminations is usually associated with undercooked chicken?

What serious problems result from hts failures drivers ed?

When passing another vehicle you are allowed to exceed the speed limit by?

An equilateral triangle has sides of length s. If each side is increased by 15, represent the new perimeter in terms of s.

Name the team of writers who wrote oklahoma!, carousel, south pacific, the king and i, and the sound of music.

How many lines of symmetry does a heart have anything

Jason is a body builder. Despite being more fit, he weighs more than his brother Ryan, who is the same height. Which is a possible reason?

In 2002 Winter Olympics, Cartriona LeMay Doan won the 500-meter race. Her winning time was 74.75 seconds. Find hee average speed to the nearest tenth of a meter

What was an effect of jay's treaty in 1794

Which best explains why the plymouth settlement was so important in american history?