$\sqrt{a^2}$
$\sqrt{a^2} = |a|$
при a = 4,6:
$\sqrt{4,6^2} = |4,6| = 4,6$
при a = −18,6:
$\sqrt{-18,6^2} = |-18,6| = 18,6$

$\sqrt{b^4} = \sqrt{(b^2)^2} = |b^2|$
при b = −3:
$\sqrt{(-3)^4} = \sqrt{((-3)^2)^2} = |(-3)^2| = |9| = 9$
при b = 1,2:
$\sqrt{1,2^4} = \sqrt{(1,2^2)^2} = |1,2^2| = |1,44| = 1,44$

$0,1\sqrt{c^6} = 0,1\sqrt{(c^3)^2} = 0,1 * |c^3|$
при c = −2:
$0,1\sqrt{(-2)^6} = 0,1\sqrt{((-2)^3)^2} = 0,1 * |(-2)^3| = 0,1 * |-8| = 0,1 * 8 = 0,8$
при c = 5:
$0,1\sqrt{5^6} = 0,1\sqrt{(5^3)^2} = 0,1 * |5^3| = 0,1 * 125 = 12,5$