|||
21. (1)已知、3為無理數,a、b為有理數,若a+b^3 = 0,求證:a=0且
Toato, bto
bJ3 EQ'
aEQ granted and to
( m movis
Hollisbio
bazeld
todo
blod (
a+b53 EQ! (A) ovat wy dost
【 [to , =
ato, b=0 sto nova ni od uoy lliw dow2l2toni diiw
oqello ()
21) a + 0 = 0 (5)
obola
In a=0. bto
21 653-0 (25) ]
liflor
wollbro bosc o comam TV ovog
to afo. bto igitoda a porta de su
1619 olio olio suolo
Commt voi of sidizoom
insmori
vilo do
0 0
olo ool VT 3
Toma or plot of wortion El 15 dmoon be az
JOV
s browol bolas
bre 2
Tidad loglod sodom
sviton vloer og