Answer:
12x
Step-by-step explanation:
3x to the power of 2 - 5x + 1
9 - 5x + 1
4x + 1 = 5x
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2x to the power of 2 + 9 - 6
4x + 9 - 6
13x - 6
7x
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5x + 7x = 12x
