Question

Va rog frumos dau coroan​

Answer 1

Răspuns:

b) 20.25

c) 16/9

d) -36/11

e) 9/100

f) 125/8

Explicație pas cu pas:

b) -4.5×(-4.5) = 20.25

c) (1⅓) ²= 3×1+1 = (4/3)²=16/9)

Answer 2

Explicație pas cu pas:

b)

$- {4.5}^{2} = - {\Big( \dfrac{45}{10} \Big)}^{2} = -\dfrac{ {45}^{2} }{ {10}^{2} } = -\dfrac{2025^{(100} }{100} = - 20.25$

c)

${\Big(1\dfrac{1}{3} \Big)}^{2} = {\Big(\dfrac{4}{3} \Big)}^{2} = \Big(\dfrac{ {4}^{2} }{ {3}^{2} } \Big) = \dfrac{16}{9} = 1\dfrac{7}{9} = 1.(7)$

d)

$-\dfrac{ {6}^{2} }{11} = -\dfrac{^{9)} 36}{11} = -\dfrac{324}{99} = - 3\dfrac{27}{99} = - 3.(27)$

e)

${\Big( - \dfrac{3}{10} \Big)}^{2} = {\Big(\dfrac{3}{10} \Big)}^{2} = \dfrac{ {3}^{2} }{ {10}^{2} } = \dfrac{9}{100} = 0.09$

f)

${\Big|- 2\dfrac{1}{2} \Big|}^{3} = {\Big(\dfrac{5}{2} \Big)}^{3} = \dfrac{ {5}^{3} }{ {2}^{3} } = \dfrac{^{125)} 125}{8} = \dfrac{15625}{1000} = 15.625$

g)

${ | - 3| }^{0} = 1$