blickksquadd8x blickksquadd8x
  • 21-09-2022
  • Mathematics
contestada

(9x² - 2x + 7) + (4x²+7x+2)
A. 13x²+9x-9
B. 13x²+5x+9
C. 5x²+5x÷5
D. 13x²+9x+9

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