Question

Urmatorul exercitiu este legat de ecuatie de forma x^2=a,a apartine lui Q
^ 2 = la patrat
/ = supra
Rezolvati ecuatiile :
1) x^2 = 9
2) x^2 = 10000
3) 8x^2 = 32
4) x^2 = 81/25
5) 10x^2 = 25/10
6) x^2 = 5
7) x^2 = 20
8) x ^2 = 44
9) 6x^2 = 15
10) 15^2 = 600
11) 2x^2 = 49

Answer 1

1) x = 3
2) x = 100
3) x^2=4
x =2
4) x= 9/5
5) x = 5
6) x = $\sqrt{5}$
7) x = 2$\sqrt{5}$
8)x = 2$\sqrt{11}$
9) x = $\sqrt{15}$ supra $\sqrt{6}$
10) x = 2$\sqrt{10}$
11) x = 7 supra $\sqrt{2}$ => x = 7$\sqrt{2}$ supra 2
cu placeree