Question

Restrangeti:
a)$\sqrt 6$$-( \sqrt 6+2 \sqrt3+1)-( \sqrt3-1)= ? b) -( \sqrt{5} + \sqrt{2} )-( \sqrt{5} -1)-(2 \sqrt5- \sqrt2)$= ?
c) $\sqrt45- \sqrt75-( \sqrt2+1)-(1-5 \sqrt3)+(4-3 \sqrt5)$= ?
d) $(3 \sqrt8-3 \sqrt18+3 \sqrt3)-[6 \sqrt2-( \sqrt18- \sqrt3)]$= ?

Raspunsuri directe :)

Answer 1

a)√6-(√6+2√3+1)-(√3-1)=
   √6-√6-2√3-1-√3+1=-3√3
b) -(√5+√2)-(√5-1)-(2√5-√2)=
    -√5-√2-√5+1-2√5+√2=-4√5+1=1-4√5
c)√45-√75-(√2+1)-(1-5√3)+(4-3√5)=
   3√5-5√5-√2-1-1+5√3+4-3√5=-√2+2=2-√2
d) (3√8-3√18+3√3)-[6√2-(√18-√3)]=
     6√2-9√2+3√3-(6√2-3√2+√3)=
     -3√2+3√3-3√2-√3=-6√2+2√3=2(√3-3√2)