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a) √12 +5√3=√4*3 +5√3 = 2√3 + 5√3 = 7√3
b) 2√48 + 2√3 = 2√16*3 + 2√3 = 2*4√3+2√3 = 8√3 + 2√3 = 10√3
c) 3√20 + √ 5 = 3√5*4 + √5 = 3*2√5 + √5 = 6√5 +√5 = 7√5
d) √18 - 2√8 =√9*2 - 2√8 = 3√2 - 2√8 = 3√2 - 2√4*2 = 3√2 - 4√2 = -1√2
e) √90 + √40 +√250 = √9*10 +√4*10 + √25*10 = 3√10 + 2√10 + 5√10 = 10√10
f) ∛40 + ∛135 = ∛5*8 + ∛27*5 = 2√5 + 3√5 = 5√5
g) 2√45 + 3√20 - √80 = 2√9*5 + 3√4*5 -√16*5 = 2*3√5 +3*2√5 + 4√5 = 6√5 + 6√5 +4√5 = 16√5
h) √50 +√72 √25*2 + √36*2 5√2 + 6√2 11√2
______________ = _________________ = ____________ = __________ = 11√2
√ 2 √2 √ 2 √ 2
i) √48 + √75 √16*3 + √25*3 4√3 + 5√3 9√3
__________ = ________________ = _____________ = ______ = 3√3
√27 √9*3 3√3 3√3
a) 5√3=√25*3=√75
b)7√2=√49*2=√98
c)6√⅚=√36*5/6=√30
d)½√12=√1/4*12=√3
e)0,1√2000=√0.01*2000=√20
f)4∛3/32=∛64*3/32=∛6
g)0,2∛50=∛0.008*50=∛0.4
h)0,3√40=√0.09*40=√3.6