- Calcule :
a) 3 + raiz 16 - raiz 25
b)5 raiz 49 - raiz 121
c)raiz 4/25 + 3 raiz 1/9
d) raiz 1,21 - raiz 0,01
a) 3 + raiz 16 - raiz 25
b)5 raiz 49 - raiz 121
c)raiz 4/25 + 3 raiz 1/9
d) raiz 1,21 - raiz 0,01
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Verified answer
a) 3 + raiz 16 - raiz 25 =3+V16-V25 = 3+ 4 - 5 = 2
b)5 raiz 49 - raiz 121=
5V49 - V121 = 5 * 7 - 11 = 35 - 11 = 24
c)raiz 4/25 + 3 raiz 1/9=
V(4/25) + 3 V(1/9) = 2/5 + 3 * 1/3 =2/5 + 1 = 7/5
d) raiz 1,21 - raiz 0,01=
V1,21 - V0,01 = 1,1 - 0,1 = 1