Question

Oblicz wartość bezwzględną.
a) |-5| - |4| - |-8|=
b) |1+√2| - |1-√2|=
c) - |3√2 - 2| - 2 |3-4√2|=

Answer 1

A) |-5| - |4| - |-8|= 5-4-8 = -7
b) |1+√2| - |1-√2|= 1+√2 - (-1+√2)=1+√2+1-√2 = 2
c) - |3√2 - 2| - 2 |3-4√2|= -3√2+2+6-8√2= -11√2 +8

Answer 2

A) 5 - 4 - 8 = -7
b) 1+√2 - (√2-1) = 1+√2-√2+1= 2
c) - 3√2 - 2 - 2(4√2-3) = -3√2 -2 -  8√2+ 6 = -11√2 + 4