Write the co-efficient of x2 in (2x – 5) (2x2 – 3x + 1)
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=>2x(2x²-3x+1) - 5(2x²-3x+1)
=>4x³-6x²+2x - 10x²+15x-5
=>4x³-6x²-10x²+2x+15x-5
=>4x³-16x²+17x-5
the co-efficient of x² is -16.
I hope it helps you.
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