(x ^ 2 + 2x + 1) + (x ^ 2 - 2x + 1) - (2x ^ 2 - x - Dicamon

Question

(x ^ 2 + 2x + 1) + (x ^ 2 - 2x + 1) - (2x ^ 2 - x + 3)

Answer

(x²+2x+1)+(x²-2x+1)-(2x²-x+3) = x²+2x+1+x²-2x+1-2x²+x-3 = x-1

Answer

(x ^ 2 + 2x + 1) + (x ^ 2 - 2x + 1) - (2x ^ 2 - x + 3); x ^ 2 + 2x + 1 + x ^ 2 - 2x + 1 - 2x ^ 2 + x - 3; =(x^ 2 +x^ 2 -2x^ 2 )+(2x-2x+x)+(1+1-3); =x-01 ngọc bích cte

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