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  • 20-05-2023
  • Mathematics
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Simplify the algebraic expression: 7x2 + 6x – 9x – 6x2 + 15.

A) 13x2 + 3x + 15

B) x2 + 15x + 15

C) x4 – 3x + 15

D) x2 – 3x + 15

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