Question

simplifique as expressões:

a) (5ײ+2×+1) + (3ײ ‐4× ‐3) – (2ײ+×–4)​

Answer 1

Resposta:

$\red{6x {}^{2} - 3x + 2}$

Explicação passo-a-passo:

$\blue{(5x {}^{2} + 2x + 1) + (3x {}^{2} - 4x - 3) - (2x {}^{2} + x - 4) } \\ (5x {}^{2} + 2x + 1) + (3x {}^{2} - 4x - 3) - (2x {}^{2} + x - 4) \\ 5x {}^{2} + 2x + 1 + (3x {}^{2} - 4x - 3) - (2x {}^{2} + x - 4) \\ (5x {}^{2} + 2x + 1) + (3x {}^{2} - 4x - 3) - (2x {}^{2} + x - 4) \\5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - (2x {}^{2} + x - 4) \\ (5x {}^{2} + 2x + 1) + (3x {}^{2} - 4x - 3) - (2x {}^{2} + x - 4) \\ 5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - 2x {}^{2} + x -4 \\ 5x {}^{2} + 3x {}^{2} - 2x {}^{2} \\ (5 + 3 - 2)x {}^{2} \\ 6x {}^{2} \\ 5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - 2x {}^{2}x + 4 \\ 6x {}^{2} + 2x + 1 - 4x - 3 - x + 4 \\ 5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - 2x {}^{2} - x + 4 \\ 2x - 4x - x \\ 2x - 4x - 1x \\ (2 - 4 - 1)x \\ - 3x \\ 5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - 2x {}^{2} - x + 4 \\ 6x {}^{2} - 3x + 1 - 3 + 4 \\ 5x {}^{2} + 2x +1+ 3x {}^{2} - 4x - 3 - 2x {}^{2} - x + 4 \\ 1 - 3 + 4 \\ 5 - 3 \\ 2 \\ 5x {}^{2} + 2x + 1 + 3x {}^{2} - 4x - 3 - 2x {}^{2} - x +4 \\ 6x {}^{2} - 3x + 2 \\ \purple{resposta} \\ \red{ 6x {}^{2} - 3x + 2}$