Question

rezolvati ecuatiile: a) (z-1)^2-25=0,z apartine R b) x^4=4,x apartine R​

Answer 1

Răspuns:

Explicație pas cu pas:

a) (z-1)^2-25=0,z apartine R

(z-1)^2 = 25

z - 1 = 5; z = 6

z - 1 = -5; z = -4

____________

b) x^4=4,x apartine R​

x^2 = 2

x1 = √2

x2 = -√2