d) x= 3,5
e)
[tex] {5x}^{2} = 125 \\ {x}^{2} = 125 \div 5 = 25 \\ x = 5[/tex]
f)
[tex] {x}^{2} - 11 = 25 \\ {x}^{2} = 25 + 11 = 36 \\ x = 6 [/tex]
g)
[tex] {(x + 1)}^{2} = 1.(7) \\ {(x + 1)} ^{2} = \frac{16}{9} \\ x + 1 = \frac{4}{3} \\ x = \frac{1}{3} [/tex]
h)
[tex] \frac{3x-2}{3} = \frac{147}{3x - 2} \\(3x - 2) \times (3x - 2) = 3 \times 147 \\ 6x - 4 = 441 \\ 6x = 445 \\ x = 74[/tex]
Coroniță te rog
