Question

Aflati x apartine R din relatiile: a)√x=25
b)√3x-2=5
c)6-√2x=2
d)√2x-3=25
e)√x^2+1=10
f)3+√x+4=2

Answer 1

√x=25
x=25²=625
b)x√3=7
x=7/√3=7√3/3
c) √2x=6-2=4
x=4/√2=4√2/2=2√2
d) x√2=28
x=28/√2=28√2/2=14√2
e) √x²=9
x²=81
x1,2=+,-9
f0 √x=-5
(√x)²=(-5)²
x=25