Page 128 - Grade 10 C.Math

cyjf, 2 ( − 2) − 1( − 2) = 0

cyjf, ( − 2)(2 − 1) = 0
cyjf, − 2 = 0 jf 2 − 1 = 0

cyjf, = 2 jf =

Curriculum Development Centre

cyjf, 2 = 2 jf 2 = 2
cyjf, = 1 jf = −1

\
x = ± 1 nfO{ 2 + = 2 df k|lt:yfkg ubf{ afofF kIf / bfofF kIf a/fa/ cfpF5g <

'{
k|lt:yfkg u/L x]gxf]nf .
∴ = ±1

cEof; 10.2

xn ug'{xf];\ M

1. -s_ 3 − 4 × 3 + 3 = 0

-v_ 4 − 6 × 2 + 2 = 0
-u_ 5 − 6 × 5 + 125 = 0

-3_ 3 − 4 × 3 + 3 = 0

-ª_ 4 − 24 × 2 = −128

2. -s_ 3 + = 9

-v_ 5 + − 25 = 0

-u_ 4 + 4 = 1
-3_ 5 + 5 2 - x = 126
x+1

]
{
x
3. 4 x 3 x +1 - 9 = 27 nfO xn ubf{ cfpg x sf dfgx¿n] 3 − 4 × 3 + = 0 nfO{

'{
\
klg ;Gt'i6 u5{g egL k|dfl0ft ugxf];\ .
4. b}lgs hLjg;Fu ;DalGwt 3ftfªs / 3ftfªs o'St ;dLs/0fsf] k|of]u x'g] s'g ltg
}
\
\
cf]6f pbfx/0fx¿sf] vf]hL sIffsf]7fdf k|:t't ugxf];\ .
'{
ul0ft, sIff – 10 125