Question

Найдите значение выражения

Answer 1

Ответ:

А)

$\sqrt{a + b}$

a=33 b=-8

$\sqrt{33 + ( - 8)} = \sqrt{33 - 8} = \sqrt{25} = 5$

a=0.65 b=0.16

$\sqrt{0.65 - 0.16} = \sqrt{0.49} = \sqrt{ \frac{49}{100} } = \frac{7}{10}$

Б)

$\sqrt{3x - 5}$

x=23

$\sqrt{3 \times 23 - 5} = \sqrt{69 - 5} = \sqrt{64} = 8$

x=1.83

$\sqrt{3 \times 1.83 - 5} = \sqrt{5.49 - 5} = \sqrt{0.49} = \frac{7}{10}$

В)

$x + \sqrt{x}$

x=0

$0 + \sqrt{0} = 0 + 0 = 0$

x=0.01

$0.01 + \sqrt{0.01} = 0.01 + 0.1 = 0.11$

x=0.36

$0.36 + \sqrt{0.36} = 0.36 + 0.6 = 0.96$

x=0.64

$0.64 + \sqrt{0.64} = 0.64 + 0.8 =1.44$

x=1

$1 + \sqrt{1} = 1 + 1 = 2$

x=25

$25 + \sqrt{25} = 25 + 5 = 30$

x=100

$100 + \sqrt{100} = 100 + 10 = 110$

x=3600

$3600 + \sqrt{3600} = 3600 + 60 = 3660$