a) [tex]x^{2}[/tex] = 16 * 4 = 64
x = [tex]\sqrt{64}[/tex] = 8
b) [tex](x+2)^{2}[/tex] = 27 * 3 = 81
x + 2 = [tex]\sqrt{81}[/tex] = 9
x = 9 - 2 = 7
c) [tex]x^{2}[/tex] = 8/7 * 2/7 = 16/49
x = [tex]\sqrt{16}/\sqrt{49}[/tex] = 4/7
d) x^{2} = 2 * 0,(2) = 2*(2/9) = 4/9
x = [tex]\sqrt{4}/\sqrt{9}[/tex] = 2/3
