Question

Solve the polynomial inequality and express the solution set in interval notation: x^2-2x>10

Answer 1

can you find the roots of x^2-2x-10=0 ?
using the quadratic formula?

Answer 2

@ghass1978 Yes. The roots are \[pm 2sqrt{11}\]

Answer 3

- and + 2 sqrt of 11

Answer 4

lets name the roots x1 and x2
the sign of ax^2+bx+c is the same as a outside the roots,i.e x belongs ]-infinity;x1[ u ]x2;+infinity[

Answer 5

(-infinity, x1] U [x2, +infinity) is this what you mean?

Answer 6

It's actually (-infinity, x1) U (x2, +infinity) because you're not including the roots in your solution set

Answer 7

since there isn't a line under the > sign