Răspuns:
Explicație pas cu pas:
7.
a) √4/9 = 2/3
b) √25/49 = 5/7
c) √81/100 = 9/10
d) √225/121 = 15/11
e) √169/144 = 13/12
f) √81/324 = 9/18
g) √361/625 = 19/25
h) √196/289 = 14/17
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8.
a)√49/9 = 7/3
b) √49/25 = 7/5
c) √169/25 = 13/5
d) √(2/3)^2 = 2/3
e) √(-4/25)^2 = 4/25
f) √19^2/13^2 = 19/13
g) √23^2/37^2 = 23/37
h) √5^4/7^4 = 5^2/7^2 = 25/49
i) √3^8/5^6 = 3^4/5^3
j) √4^3/9^5 = (√4^2/9^4)*(√4/5) = 4/9^2 * (√4/5)
k) √3^6*2^4/5^2 = 3^3*2^2/5
l) √14^2/11^2*3^2 = 14/11*3
