Question

Se dau numerele a=(2+radical2) la a doua-radical8-(1/3-2radical2) b=(0,2)la -1 calculati media aritmetica

Answer 1

Răspuns:

Ma=(16+12√2) / 3

Explicație pas cu pas:

a=(2+√2)² -√8 -(1/3-2√2)

√8=2√2

(2+√2)²=4+4√2+2=6+4√2

a=6+4√2+2√2-1/3+2√2

a=17/3+8√2

b=(0,2) ^-1 = (2/10)^ -1 =10/2 =5

Ma=(a+b) : 2 = (17/3+8√2+5) : 2 = (16+12√2) / 3