Question

$\sqrt{4 \frac{23}{49} } + \sqrt{1 \frac{1}{49} } + \sqrt{2 \frac{30}{49} } - \sqrt{3 \frac{15}{49} }$
Va rog, cat mai rpd​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

Răspuns:

4 intregi 23/49 = (4x49+23)/49 = 219/49

1 intreg 1/49 = (1x49+1)/49 = 50/49

2 intregi 30/49 = (2x49+30)/49 = 128/49

3 intregi 15/49 = (3x49+15)/49 = 162/49

= √(219/49) + √(50/49) + √(128/49) - √(162/49) =

= √219/√49  + √50/√49  +  √128/√49  -  √162/√49 =

= √219 / 7   +  5√2/7  + 8√2/7  - 9√2/7 =

= (√219 + 5√2 + 8√2 - 9√2) / 7 =

= (√219 + 4√2) / 7

Posibil ai scris gresit primul radical