Question

aflati x apartine de Q+ din proportiile

Answer 1

a) $x^{2}$ = 16 * 4 = 64
x = $\sqrt{64}$ = 8

b) $(x+2)^{2}$ = 27 * 3 = 81
x + 2 = $\sqrt{81}$ = 9
x = 9 - 2 = 7

c) $x^{2}$ = 8/7 * 2/7 = 16/49
x = $\sqrt{16}/\sqrt{49}$ = 4/7

d) x^{2} = 2 * 0,(2) = 2*(2/9) = 4/9
x = $\sqrt{4}/\sqrt{9}$ = 2/3