Page 108 - Grade 10 C.Math

pbfx/0f 1
2
3
4
2
n=;= lgsfNg'xf];\ M x + x + 1 / x + x + x
;dfwfg
2
oxfF klxnf] cleJo~hs = x + x + 1
4
Curriculum Development Centre
= (x + 1) + x 2
4
2
2
2
= (x + 1) – 2x + x 2
= (x + 1) – x
2
2
2
= (x + x + 1) (x – x + 1)
2
2
3
2
bf];|f] cleJo~hs = x + x + x
= x(x + x + 1)
2
;femf u'0fg v08 -d=;=_ = (x + x + 1)
2
afFsL u'0fg v08x¿sf] u'0fg kmn = x(x – x + 1)
2
;femf u'0fg v08 / afFsL u'0fg v08x¿sf] u'0fg kmn = x(x + x + 1) (x – x + 1)
2
2
n=;= = x(x + x + 1) (x – x + 1)
2
2
pbfx/0f 2
3
n=;= lgsfNg'xf];\ M x + y / x y – x y + xy 3
3
2 3
3
;dfwfg
3
oxfF, klxnf] cleJo~hs = x + y
3
= (x + y) (x – xy + y )
2
2
bf];|f] cleJo~hs = x y – x y + xy 3
3
2 2
= xy(x – xy + y )
2
2
;femf u'0fg v08 = x – xy + y 2
2
afFsL u'0fg v08x¿ = (x + y). xy
t;y{, n=;= = ;femf u'0fg v08 X afFsL u'0fg v08x¿

= (x – xy + y ) x (x + y) (xy)
2
2
= xy(x + y) (x – xy + y )
2
2

105 ul0ft, sIff – 10