Question

Exista x∈ Rastfel incat:
a)x²=169
b)x²=$\frac{1}{100}$
c)x²=1,21
d)x²=7
e)x²=-4?
Multumesc mult!!!:)))

Answer 1

a)x²=169
x=√169=13
x=-√169=-13
b)x²=
x=√=1/10
x=-1/10
c)x²=1,21
x=√1,21=1,1
x=-√1,21=-1,1
d)x²=7
x=√7
x=-√7
e)x²=-4
Deoarece x²≥0⇒ecuatia nu are solutii reale.