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(5x2 + 2x - 1) + (4x2 - x -9)
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(5x2 + 2x - 1) + (4x2 - x -9)

User Nicoschl
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6 votes

Answer:


5 {x}^(2) + 2x - 1 + 4 {x}^(2) -x - 9 \\ 5 {x}^(2) + 4 {x}^(2) + 2x - x - 1 - 9 \\ = 9 {x}^(2) + x - 10

User Sebrockm
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