Q). Factorise and divide:
7 x 3 - 63 x ÷ 7 x - 3

7x3-63x7x-3=7xx2-97x-3Using a2-b2=a-ba+b=7xx-3x+37x-3=xx+3

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(7x3-63x)/7(x-3)
=7x(x2-9)/7(x-3)
=7x(x-3)(x+3)/7(x-3)
=x(x+3)


 
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