Question

preciso dos cálculos​

Answer 1

a) $x^{2} = (12+4)4=16.4=64=> x = \sqrt{64} = 8$

b) $x^{2} = 4.9 = 36=>x=\sqrt{36} = 6$

c) $6^{2}=12x => 12x = 36 => x=36/12=3$

d) $6^{2}=(3+x)3 = 9 + 3x => 3x + 9 = 36 => 3x = 27 => x = 9$

e) $z^{2} = 16.25 = 400 => z = \sqrt{400} = 20$