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(14.) (24+xy +22,32 +xys +y+) (x-y).

Ans. 205 — 45.

(15.) (a-b) (a+b) (a-6) (a+b).

Ans. a-2a212 +64.

(16.) (a + b) (a-b).

Ans. q- a b + ab2-63.

(17.) (a-2ab + b) (a-b),

Ans. as - 3a b + 3ab"-63.

(18.) (a +26-3c) (a-21 +3c).

Ans.a462 + 12bc-9c?.

(19.) (2:5+*+23+++1) (2-1).

Aus. 26_1.

(20.) (1+x4-322 + 2x) (2+2x + x3).

Ans. 2+ 4.2+ +62-2.0° +25-523 +7.

DIVISION. 1.

2. 203 +2+3).-(x-1 202 +x+1)-1 (2-1 4+23 +22

23 ++

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6.

-9ab +672

-9ab +662
23 — Qob +cæ) æby —æ+by+cxoy (axy

aby 24by+cxoy
2a” +30) 6a3 +8a? +9ab + 12b (3a +4

6a3

7.

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11. «+2y-32) 2-4yo+12yz-92 (x-2y+32

22 + 2xy-3xz

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15. a3 + 2a +2) a7-a5 +421-503-2a +6a+2 a? +225 + 2a4

a4 - 3a2 + 2a +1

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18.

442 3a-4a2)15a5 + * +2a3-36aR(5a + 7a+10+ 1505 - 20a4

3a3-4a2

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- Xy+y3

xy2 + y3
a+b) a5 +55 (at-al+a%b2- ab + 6+

a5 + a4b

20.

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22.

ai +20+ 4a +8) 3a4-48 (3a-6

3a4 +60 + 12a +24a

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