Multiple choice

What is the difference in the roots of the equation ${ x }^{ 2 }-10x+9=0$?

  1. $2$
  2. $3$
  3. $5$
  4. $8$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Factoring x^2 - 10x + 9 = 0 gives (x - 9)(x - 1) = 0. The roots are 9 and 1. The difference is 9 - 1 = 8.

AI explanation

The roots of the equation can be found by factoring x^2 - 10x + 9 = 0 into (x - 9)(x - 1) = 0, yielding roots of 9 and 1. The difference between these roots is 9 - 1, which equals 8. The result is 8.

Keep practicing — related questions