Mathematics · Algebra
Simplify the algebraic expression: 3x(x + 2) - 5x(x - 3) + 7.
- 12x 2 + 21x + 7
- 22x 2 + 11x + 7
- 3-2x 2 + 21x + 6
- 4-2x 2 + 21x + 7✓
Correct answer
-2x 2 + 21x + 7
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