Answer:
- 51
Explanation:
substitute x = - 2 into the expression
2x³ - 4x² + 8x - 3
= 2(- 2)³ - 4(- 2)² + 8(- 2) - 3
= 2(- 8) - 4(4) - 16 - 3
= - 16 - 16 - 19
= - 32 - 19
= - 51
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