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Select the correct answer.
Which sum or difference is modeled by the algebra tiles?
-X²
1 1
OA (x²+2x+3)-(x²-2x-1)=-2x²+2
OB. (x2+2x+3)-(-x²+2x+1)=2x²+2
OC. (x²+2x+3)+(x²+2x+1)=2x²+2
OD. (x²+2x+3)+(-x2²-2x-1)=-2x²+2

Select the correct answer Which sum or difference is modeled by the algebra tiles X 1 1 OA x2x3x2x12x2 OB x22x3x2x12x2 OC x2x3x2x12x2 OD x2x3x22x12x2 class=

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