Question

Calculați, conform modelului

Answer 1

r = radical

/ = fracție

ex 3

b) r 16/25= r (4/5)² = 4/5

c) r 36/49= r ( 6/7)² = 6/7

d) r 1/100= r ( 1/10)²= 1/10

e) r 121/81= r ( 11/9)²= 11/9

f) r 225/144= r ( 15/ 12)²= 15/12

ex 4

b) r 2×1/4= r 4×2+1/4 = r 9/4 = 3/2

c) r 2×14/25= r 2×25+14/25= r 64/25= 8/5

d) r 1+11/25= r 1×25+11/25 = r 36/25= 6/5

e) r 3×6/25= r 3×25+6/25= r 81/25= 9/5

f) r 4×13/36= r 4×36+13/36= r 157/36= 157/6

ex 5

b) r 0,25= r (0,5)²= 0,5

c) r 0,81= r ( 0,9)²= 0,9

d) r 2,56= r ( 1,6)² = 1,6

e) r 6,76= r ( 2,6)²=2,6

f) r 0,0225= r (0,15)²= 0,15