Question

Restrângeți sumele:
a)
$2\sqrt{2} + 5 \sqrt{2 } - (7 \sqrt{2} + 2 \sqrt{2})$
b)
$11 \sqrt{6} + 7 \sqrt{6} -(3 \sqrt{6} - 6 \sqrt{6} )$
c)
$2 \sqrt{7} - 4 \sqrt{7} + (2 \sqrt{7} + 9 \sqrt{7} - 7 \sqrt{5} )$
d)
$\sqrt{11 } + ( - 3 \sqrt{11} + 6 \sqrt{11} ) - ( - 3 \sqrt{11} - 9 \sqrt{11)}$
e)
$2 \sqrt{5} + 3 \sqrt{10} - (5 \sqrt{5} - 3 \sqrt{10} ) + ( - 3 \sqrt{5} - 9 \sqrt{10} )$
f)
$(3 \sqrt{3} - 2 \sqrt{2} ) + ( - 4 \sqrt{3} - 3 \sqrt{2} ) - (6 \sqrt{2} - 5 \sqrt{3} )$

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Answer 1

Răspuns:

a)=2radical2+5radical2-9radical2=-2radical2

b)=11radical6+7radical6-(-3radical6)=11radical6+7radical6+3radical6=21radical6

c)=2radical7-4radical7+4radical7=2radical7

d)=radical11+3radical11+12radical11=16radical11

e)=2radical5+3radical10-5radical5+3radical10-3radical5-9radical10=-6radical5-3radical10

f)=3radical3-2radical2-4radical3-3radical2-6radical2+5radical3=12radical3-11radical2

Sper ca te-am ajutat!