Question

What is the number of real solutions? 2x^2-11x=11

Answer 1

use descartes

Answer 2

my options of answers are:
two real solutions
one real soultion
cannot be determined
no real solutions

Answer 3

first look at how many change of signs you have in the function. in this case you have (-)(-)(-) which no change. This means that there is no positive real root

Answer 4

next let

f(x)=f(-x)

\[2(-x)^2-11(-x)-11=0\]
\[2x^2+11x-11\]