D. Polynomials
1). (x + 5) (x - 4) = ________
2). 7x² + 3x² + 18x² = __________
3). (2a + 3) + (3a - 9) = _________
4). (5x - y) + (3x + 2y) = _________
5). (3x - 4y) - (x + 2y) = ________
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Answer:
1. x²+x-20
2.28x²
3. 4a²-12a-27
4. 2x-3y
5. 2x-6y
Step-by-step explanation:
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