Question

Determinati nr natural care verifica relatiile:

a)x^2impartit la 2^2=(3^2)^2

b)25^2 minus x^2=24^2

c)x impartit 10^3=10^2

d)144 impartit x =3^2

e)3^2+x^2=5^2

f)324 impartit la 5^x=(3^2 ori 2)^2

Answer 1

a)x²:2²=(3²)²
x²:4=81
x²=81·4
x²=324
x=√324
x=18
b) ⇒625-x²=576
-x²=576-625
-x²=-49   (-1)
x=√49=7
c)⇒x:1000=100
x=1000·100
x=100000
d)⇒144:x=9
x=144:9
x=16
e)⇒9+x²=25
x²=25-9
x²=16
x=√16
x=4