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1 solution
x 3 − 7 x 2 + 2 0 1 5
= x ( x 2 − 7 x ) + 2 0 1 5
= x ( x 2 − 6 x − x ) + 2 0 1 5
= x ( 6 − x ) + 2 0 1 5
= − ( x 2 − 6 x ) + 2 0 1 5
= − 6 + 2 0 1 5
= 2 0 0 9
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