11 uždavinys

Sprendimas:

2^^(x+3) =
16

2^^(x+3) = 16 $2^{(x+3)}$ = $16$

2^^(x+3) = 2* 2* 2* 2 $2^{(x+3)}$ = $2\cdot 2\cdot 2\cdot 2$

2^^(x+3) = 2^⁴ $2^{(x+3)}$ = $2^{4}$

x + 3 = 4

x = 1

Sprendimas:

saknis(

2-x) =
3

saknis(

2-x) = 3 $\sqrt {2-x}$ = $3$

saknis(

2-x)^² = 3^² $\sqrt {2-x}^{2}$ = $3^{2}$

(2-x) = 3^² $(2-x)$ = $3^{2}$

(2-x) = 9 $(2-x)$ = $9$

2-x = 9 $2-x$ = $9$

2 = x+9 $2$ = $x+9$

2-9 = x $2-9$ = $x$

-7 = x $-7$ = $x$

x = - 7

10 uždavinys12 uždavinys