Mxiin7
Mxiin7 Mxiin7
  • 21-11-2021
  • Mathematics
contestada

Can someone explain letter c?! From where did 13 come from there’s no 13 in the question..

Can someone explain letter c From where did 13 come from theres no 13 in the question class=
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Paounn
Paounn Paounn
  • 21-11-2021

Answer:

Seems correct to me. I color coded the various terms.

Ver imagen Paounn
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Selena328
Selena328 Selena328
  • 21-11-2021

Step-by-step explanation:

[13x³ came by adding 9x³ and 4x³]

  • 12x²+8x-5x+9x³+2x²+4x³
  • (9x³+4x³)+(12x²+2x²)+(8x-5x)
  • 13x³+14x²+3x
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