Question

Factorise: 1)p2 + xp + 9p + 9x
2) z2 - 225
3) 20t2 - 26t + 8
4) 125p3 – 1
5) ( p + q)3 – p 3 - q 3
6) (a2 - b 2 ) / ( a + b)2 x a2 + ab + b2 / ( a3 - b 3 )
7) x3 + 1 / 8x3 8) ( 2p + 3q)3 – 8p3 – 27q3

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Answer 1

Please write down no. 6 and 7 clearly. It is unclear

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Answer 2

1).P(P+X)+9(P+X)

(P+X)(P+9)

Answer:

2). Z²-15²

(Z+15) (Z-15)

Converting into formulas

6).(a+b) (a-b) /(a³+b³) /(a-b) (a²+ab+b²)

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