If 2x(x²-1) = ax³-5x²+7x-4 represent a quadratic equation, then a=
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Step-by-step explanation:
2x(x²-1)=ax³-5x²+7x-4
2x³-2x=ax³-5x²+7x-4
2x³-ax³=-5x²+2x+7x-4
x³(2-a)=-3x²+7x-3
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