Question

Solve the given inequality :

$x^2\le 9$

• A. $[0,8]$
• B. $[-3,3]$
• C. $(0,8)$
• D. None of these

Answer 1

Answer: (B)

$[-3,3]$

R.E.F image

$x^2\le 9$

$x^2-9\le 0$ $(a^2-b^2=(a+b\left)\right(a-b\left)\right)$

$(x-3)(x+3)\le 0$

$xϵ[-3,3]$

Option, B is correct.