Răspuns :
Raspuns:
9/25<2/5
Explicație pas cu pas:
x=[1-(3/10+8/15)×12/25]^2
x=(1-5/6×12/15)^2
x=(1-5×2/25)^2
x=(1-2/5)^2
x=(3/5)^2
x=3^2/5^2
x=9/25
9/25=45
2/5=50
45<50
ADICA
9/25<2/5
Răspuns:
2/5>x
Explicație pas cu pas:
x=[1-(3/10+8/15)×12/25]^2
x=(1-5/6×12/15)^2
x=(1-2/5)^2
x=(3/5)^2
x=9/25
x=0,36 si 2/5=0,4 => 2/5>9/25(x)