Cupcakejam
Cupcakejam Cupcakejam
  • 25-05-2016
  • Mathematics
contestada

Which polynomial does the model represent?

A: -x^3 + 2x^2 - 3x + 4
B: x^2 + x -2
C: -x^2 - x + 2
D: -x^2 + x - 2

Which polynomial does the model represent A x3 2x2 3x 4 B x2 x 2 C x2 x 2 D x2 x 2 class=

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meerkat18
meerkat18 meerkat18
  • 29-05-2016
The model is an algebra tile model.

1st big tile is x², however, it is in black thus it's a negative sign. -x²
2 white tiles represent 2x
3 black tiles represent -3x
3 white small tiles represent + 3
1 black small tile represent -1

-x² + 2x - 3x + 3 - 1 ⇒ -x² - x + 2  Choice C.
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