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Emmaemma21
a fost răspuns

Scoateti factori de sub radical si apoi calculati:

a)√12+2√27-√75
b)√44+5√99-√275
c)-3√20+√80-√405

Răspuns :

Eleeweleew
a) √12+2√27-√75=
=2√3+2×3√3-5√3=
=2√3+6√3-5√3=
=3√3

b)√44+5√99-√275=
=2√11+5×3√11-5√11=
=2√11+15√11-5√11=
=12√11

c)-3√20+√80-√405=
=(-3)×2√5+4√5-9√5=
=-6√5+4√5-9√5=
=-11√5

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