Question

media aritmetica a nr x si y ​

Answer 1

Răspuns:

Explicație pas cu pas:

x=√2+2/√2

x=√2×√2/√2+2/√2

x=2/√2+2/√2

x=4/√2 rationalizam cu √2

x=4√2/2

x=2√2

y=√2+√8-√32+√50

y=√2+2√2-4√2+5√2

y=3√2-4√2+5√2

y= -√2+5√2

y= 4√2

Ma=(x+y):2= (2√2+4√2):2= 6√2:2=3√2

raspuns corect c) 3√2