Question

reduzca: (x + 1)(2x + 1) + (x - 1)(2x - 1) + x(x + 1) - x

aiuda!! <3

Answer 1

(x + 1)(2x + 1) + (x - 1)(2x - 1) + x(x + 1) - x
2x²+x+2x+1 + 2x²-x-2x+1 + x²+x-x
5x² + 2

Saludos...

Answer 2

(x+1)(2x+1) +(x-1)(2x-1) +x(x+1) - x
2x²+ 3x +1 +( 2x²-3x+1) +x²+x -x
2x² +3x +1 +2x² -3x +1 +x² +x - x sumando y restando
5x² + 2