simplify the following equations :
i)
ii)
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pii- x³-7x²+15x-9
= x³-x²-6x²+6x+9x-9
=x²×(x-1)-6x×(x-1)+9(x-1)
=(x-1)×(x²-6x+9)
=(x-1)×(x-3)²
= x³-x²-6x²+6x+9x-9
=x²×(x-1)-6x×(x-1)+9(x-1)
=(x-1)×(x²-6x+9)
=(x-1)×(x-3)²
niti13:
actually this is a question of limits and derivatives
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