Page 117 - Grade 10 C.Math

-u √2 × √2 -3_ √4 × √2
4. ;/n ug'{xf];\ M

-s_ 3√18 × 2√12 -v_ 5√12 × 7√6

-u √3 + √2 √3 − √2 -3_ 4√5 − 7√2 3√5 + 4√2
Curriculum Development Centre
√ ×√ ×√
-ª_ 27√24 ÷ 9√12 -r_
√ ×√

'
5. s'g} 5 cf]6f km/s d"n lrxg ePsf ;8{x¿ n]Vgxf];\ . tLdWo] s'g} 4 cf]6f ;8{x¿nfO {
\
'{
u'0fg ugxf];\ / kfFrf}F ;8{n] pSt u'0fg kmnnfO{ efu ugxf];\ . k|fKt clGtd
'{
kl/0ffdnfO{ sIffsf]7fdf k|:t't ugxf];\ .
'{

9.3 cfg'kftLs/0f (Rationalization)
lgDg lnlvt k|Zgx¿df 5nkmn u/L k|fKt glthfnfO{ sIffsf]7fdf k|:t't ug'{xf];\ M

sf] x/nfO{ s;/L ;8{/lxt agfpg ;lsG5 xf]nf <
√
sf] x/nfO{ s;/L ;8{/lxt agfpg ;lsG5 xf]nf <
√ √

;8{;lxt leGgsf] x/nfO{ ;8{/lxt agfpg] lj|mofnfO{ x/sf] cfg'kftLs/0f (rationalization)
elgG5 .

olb s'g} cgfg'kflts kb √ + eP o;sf] cfg'kflts v08 (Rationalising factor)
√x − y x'G5 . √x + y / √x − y nfO{ Ps cfk;df u'0fg ubf{ cfg'kflts u'0fg
v08 (x-y) k|fKt x'G5 .

pbfx/0f

1. sf] nfO{ cfg'kftLs/0f ug'{xf];\ .
√
;dfwfg

\
oxfF sf] x/df √3 5, h'g cgfg'kflts ;ªVof xf] .
√
10 √3
To;}n], c+z / x/ b'j}df √3 n] u'0fg ubf{ ×
2√3 √3
√ √
= =
×

114 ul0ft, sIff – 10