Question

pfv me ajudem!!!!! urgente

Answer 1

$A) 4x^{2} + 4x + 1 + x^{2} - 10x +25 = 5x^{2} - 6x +26$

$B) x^{2} - 2x + 1 - x^{2} - 2x -1 = - 4x$

$C) x.(x^{2}-6x+9) - 4.(x^{2} +x+1/4) = x^{3} - 6x^{2} +9x-4x^{2}-4x-1$
            $= x^{3} -10x^{2} +5x-1$

$D) x^{2} -6x + 9 - x^2 + 4x + 4 + x^2 - x - 3x - 3$
          =$x^{2}+10$