Question

Rezolvati ecuatiile: [ € = apartine]
a) x²=144, x€ R+
b) 2y² =200, y€ R-
c) (z-1)² - 25=0, z€R-
d) x⁴ = 4, x€ R

Answer 1

a) x=12
b) y la a doua=100
y= -10
c) (z-1) la a doua = 25
z-1=-5
z=-4
d) x la a doua=2
x1=radical din 2
x2= -radical din 2