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a)√2⁸=16
b)∛6⁶=36
17.
√7⁴=49
√4⁷=128
∛27²=38
∛2²⁷=512
czyli
∛2²⁷ , √4⁷, √7⁴, ∛27²
20.
a) √2*√3=√6
b)2√5*3√2=6√10
c)3∛7*6∛2=18∛14
d)(4√6 )/(2√2)=(4√3*√2)/(2√2)=2√3
e)(4√10*√5)/(5√2)=(4√5*√2*√5)/(5√2)=4√25/5=(4*5)/5=4
f)7√8*(6√3)/√6= (7√4*√2*6√3)/(√3*√2)=42√4
g) (∛24)/(6∛3)=(∛3*∛8)/6∛3=2/6=1/3
h)(∛9*2∛6)/(3∛2)=(∛9*2*∛2*∛3)/(3∛3)=(2∛18)/3
21.
√2(√5+2√5)=√10+2√10=3√10
½∛9(∛3+5∛5)=½∛27+(5/2)∛27=½*3+(5/2)*3=3/2+15/2=18/2=9
22.
a)√27=√9*√3=3√3
b)√128=√64*√2=8√2
f)∛88=∛8*∛10=2∛10