Mathematics · Algebraic Expressions
Simplify the expression: (x + 2)(2x + 5)(x - 4) + x 2 + 5x - 12.
- 12x 3 + 2x 2 - 21x - 12
- 2x 3 + 2x 2 - 21x - 52
- 32x 3 + x 2 - 21x - 52
- 42x 3 + 2x 2 - 21x - 52✓
Correct answer
2x 3 + 2x 2 - 21x - 52
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