Factorisation Exercise 4.1



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Exercise 4.2 Exercise 4.3 Exercise 4.5

Q1 Factorise the following (1 to 9):
(i) 8xy3 + 12x2 y 2
(ii) 15 ax3 9ax2

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Q2 (i) 21py2 56py
(ii) 4x3 6x2

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Q3 (i) 2πr 2 - 4πr
(ii) 18m + 16n

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Q4 (i) 25abc2 15a2b 2c
(ii) 28p2q2r 42pq2r2


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Q5 (i) 8x3 6x2 + 10x
(ii) 14mn + 22m 62p


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Q6 (i) 18p2q 2 24pq2 + 30p2q
(ii)27a3b3 18a2b3 + 75a3b2


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Q7 (i) 15a (2p 3q) 10b (2p 3q)
(ii) 3a(x2 + y2 ) + 6b (x2 + y2 )


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Q8 (i) 6(x + 2y)3 + 8(x + 2y)2
(ii) 14(a 3b)3 21p(a 3b)

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Q9 (i) 10a(2p + q)3 15b (2p + q)2 + 35 (2p + q)
(ii) x(x2 + y2 z 2 ) + y(-x 2 y 2 + z2 ) z (x2 + y z 2 )


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