Page 107 - Grade 10 C.Math

(17) a – 2ac + c – b / b – 2bc + c – a (18) x – y – 2yz – z / y – z – 2zx – x 2
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(19) x – y + 2yz – z / y – z + 2zx – x (20) x – y + 2y - 1 / x – 3xy(x–y) – y + 1
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(21) x + (b-a)x – ab / x – (a – b)x – ab (22) x + (a – b)x – ab / b – 2bx + x 2
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(23) x + x + x + 1 / x – x – x + 1 (24) x + x + x + 1 / x – x + x – 1
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(25) x + x – x – 1 / x + x y + xy (26) x + x + 1, x + 1 / x – x + x
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Curriculum Development Centre
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(27) a + a b + b , a + b / a – a b + ab (28) x – 3x + 1, x – x – x / x – 2x + x
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(29) x + 2x + 2x + 1, x – 1 / x + x + 1 (30) x + x y + x y , x + x y + y / x – y 3
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(31) x + 2x + 4x, x + 4x + 16 / x - 8 (32) 27x + 125y , 9x - 15x y + 25xy 2
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(33) 16x + 100x y + 625y , 4x – 10x y + 25xy / 8x + 125y 3
(34) x – 7x + 1, x + 3x + x / x – 11x + 1
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(35) x + 64y , x + 16x y + 256y / 4x – 16x y + 64y x
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8.2 n3'Ttd ;dfkjTo (Least Common Mul ple)
lbOPsf b'O{ cf]6f aLhLo cleJo~hsx¿sf ;femf u'0fg v08 / ;f] afx]ssf u'0fg v08x¿sf]
u'0fg kmn lgsfNg'xf];\ .
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x + 4 / 2x + 4x + 4

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;femf u'0fg v08 = (x + 2x + 2)
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klxnf] cleJo~hs = x + 4
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= (x + 2) – 2x = (x + 2) – 2x) 2
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= (x + 2x + 2) (x + 2 – 2x)
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bf];|f] cleJo~hs = 2x + 4x + 4 = 2(x + 2x + 2)
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;femf u'0fg v08afx]ssf u'0fg v08x¿ = 2 / (x – 2x + 2)
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oL b'j}sf] u'0fg kmn = (x – 2x + 2) x 2
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 n=;= = d=;= x afFsL u'0fg v08x¿sf] u'0fg kmn
= 2(x + 2x + 2) (x – 2x + 2)
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t;y{, lbOPsf cleJo~hsx¿sf] ;femf u'0fg v08 / x + 2x + 2 2
afFsL u'0fg v08x¿sf] u'0fg kmnnfO{ n3'Ttd ;dfkjTo{
(Least common mul ple) elgG5 . o;nfO{ e]glrqdf

(Venn diagram) lgDgfg';f/ k|:t't ug{ ;lsG5 . n=;== 5fofF kfl/Psf] efu
104 ul0ft, sIff – 10