Răspuns :
x^2 = 4
x = radical din 4
x = { -2;2}
x^2 = 9
x = radical din 9
x = {-3;3}
x^2 = 144
x = radical din 144
x = { - 12; 12}
x^2 =16/25
x = radical din 16/25
x = { -4/5; 4/5 }
x = radical din 4
x = { -2;2}
x^2 = 9
x = radical din 9
x = {-3;3}
x^2 = 144
x = radical din 144
x = { - 12; 12}
x^2 =16/25
x = radical din 16/25
x = { -4/5; 4/5 }
a) x²=4
x=±2
x={-2 ; 2}
b) x²=9
x=±3
x={-3 ; 3}
c) x²=144
x²=±12
x={-12 ; 12}
f) x²=16/25
x=±4/5
x={-4/5 ; 4/5}
x=±2
x={-2 ; 2}
b) x²=9
x=±3
x={-3 ; 3}
c) x²=144
x²=±12
x={-12 ; 12}
f) x²=16/25
x=±4/5
x={-4/5 ; 4/5}