What are the roots of the equation x2-5x-2 = 0?

Answer 1

x^2 - 5x - 2 = 0
x = ( 5 +/- sqrt( 25 + 8 ) / 2 )
= ( 5 +/ sqrt(33) ) / 2.

Answer 2

use the quadratic formula- x equals negative b, plus or minus the square root of b squared minus four a c, all over two a. (can't really enter that on answers, but you can look at it on the site under the sources.)
a=1
b=-5
c=-2
when yuo plug in the answers and simplify a little you get...
x equals 5 plus or minus the square root of 33, all divided by 2

then when you simplify to the end you get:
x=-0.3772281
x=5.372281

hope this helps

Answer 3

there's a suitable approach, yet that's amazingly complicated. better to wager one attempting -2, -a million, 0, a million, 2 for x. right here x=2 helps. so which you will divide via (x-2) and characteristic a squared equation left that's common to resolve.

Answer 4

x2-5x-2 = 0
x=1/2[5+/-sqrt(25+8)]
=1/2[5+/-sqrt(33)].

Answer 5

I think you meant x-squared when you write x2
if so, you can use the quadratic formula
where a=1 b= -5, and c= -2


x1=5.372281323269014
x2=-0.3722813232690143

Answer 6

x2 - 5x - 2 = 0

Solve with quadratic formula

x = (-b +- √(b² - 4ac))/2a

x = (5 +- √(25 + 8))/2

x = (5 +- √(33))/2

x = 5.3723, x = -0.3723
.
.

Answer 7

Use the quadratic formula to figure this out.