FACTOR OF POLYNOMIALS WITH GROUPING AND IDENTITIES WORKSHEET

(1)  Factorise the following expressions:

(i) 2a2 + 4a2 b + 8a2 c

(ii)  ab - ac - mb + mc               Solution

(2)  Factorise the following:

(i) x2 + 4x + 4

(ii)  3a2 - 24ab + 48b2

(iii)  x5 - 16x

(iv)  m2 + 1/m2 - 23

(v)  6 - 216 x2

(vi)  a2 + 1/a2 - 18          Solution

(3)  Factorise the following:

(i)  4x2 +  9y2 + 25z2 + 12xy + 30yz + 20xz

(ii)  25x2 + 4y2 + 9z2 - 20xy + 12yz - 30zx          Solution

(4)  Factorise the following 

(i)  8x3 + 125y3

(ii)  27x3 - 8y3

(iii)  a6 - 64            Solution

(5)  Factorise the following:

(i) x3 + 8y3 + 6 xy - 1

(ii)  l3 - 8m3 - 27n3 - 18 lmn             Solution

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