Question

solve for X :- x^2-4x-8=0

Answer 1

hey mate,

the answer is in the attachment!!!!?

please refer to the attachment!!!

Answer 2

x2 – 4x – 8 = 0
x2 – 4x = 8

x2 – 4x + 4 = 8 + 4
x2 – 4x + 4 = 12

(x – 2)2 = 12
Now I can square-root both sides of the equation, simplify, and solve:

Then the solution is

$x = 2 + 2 \sqrt{3} \\ (x - 2) ^{2} = 12 \\ \sqrt{(x - 2) ^{2} } = \sqrt{12} \\ x - 2 = \sqrt{4.3} \\ = 2 \sqrt{3} \\ x = 2 + 2 \sqrt{3}$