Question

solve for r.
$r^2 - 36 = 0$
write your answers as integers or as proper or improper fractions in simplest form.
$r = \boxed{}$ or $r = \boxed{}$
save answer

Explanation:

Step1: Isolate the squared term

$r^2 - 36 + 36 = 0 + 36$
$r^2 = 36$

Step2: Take square root of both sides

$r = \pm\sqrt{36}$
$r = \pm 6$

Answer:

$r = 6$ or $r = -6$