Question

va rog mult cele 3 ex plizz va rog multtt

Answer 1

Acestea sunt exercițiile rezolvate:)

Answer 2

$1) \\ \\ \sqrt{18} : \sqrt{2} - 1 = \\ \\ 3 \sqrt{2} : 2 - 1 = \\ \\ 3 \sqrt{2} \times \frac{1}{ \sqrt{2} } - 1 = \\ \\ \frac{3 \sqrt{2} \sqrt{2} }{2} - 1 = \\ \\ \frac{3 \sqrt{4} }{2} - 1 = \\ \\ \frac{3 \times 2}{2} - 1 = \frac{6}{2} - 1 = 3 - 1 = 2 \\ \\ 3) \\ \\ (x - 1) ^{2} - x(x - 2) = \\ \\ {x}^{2} - 2x + 1 - {x}^{2} + 2x = \\ \\ ( {x}^{2} - {x}^{2}) + ( - 2x + 2x) + 1 = 1$