Question

(x²+8x)-(3x-5)+2x²-7x+7

Answer 1

Resposta:

$\sf{(x²+8x)-(3x-5)+2x²-7x+7}$

$\sf{ {x}^{2} + 8x - (3x - 5)2 {x}^{2} - 7x + 7 }$

$\sf{ {x}^{2} + 8x - 3x + 5 + 2x {}^{2} - 7x + 7 }$

$\sf{3 {x}^{2} + 8x - 3x + 5 - 7x + 7}$

$\sf{3 {x}^{2} - 2x + 5 + 7 }$

$\rightarrow\boxed{\boxed{\sf{3 {x}^{2} - 2x + 12}}}\checkmark$

Explicação passo-a-passo:

(espero ter colaborado)

Answer 2

$(x {}^{2} + 8x) - (3x - 5) + 2x {}^{2} - 7x + 7 \\ (x {}^{2} + 8x) - (3x - 5) + 2x {}^{2} - 7x + 7 \\ x {}^{2} + 8x - (3x - 5) + 2x {}^{2} - 7x + 7 \\ (x {}^{2} + 8x) - (3x - 5) + 2x {}^{2} - 7x + 7 \\x {}^{2} + 8x - 3x + 5 + 2x {}^{2} - 7x + 7 \\ x {}^{2} + 2x {}^{2} \\ 1x {}^{2} + 2x {}^{2} \\ (1 + 2)x {}^{2} \\ 3x {}^{2} \\ x {}^{2} + 8x - 3x + 5 + 2x {}^{2} - 7x + 7 \\ 3x {}^{2} + 8x - 3x + 5 - 7x + 7 \\ x {}^{2} + 8x - 3x +5 + 2x {}^{2} - 7x + 7 \\ 8x - 3x - 7x \\ (8 - 3 - 7)x \\ - 2x \\ x {}^{2} + 8x - 3x + 5 + 2x {}^{2} -7x + 7 \\ 3x {}^{2} - 2x + 5 + 7 \\ x {}^{2} + 8x - 3x + 5 + 2x {}^{2} - 7x + 7 \\ 3x {}^{2} - 2x + 12 \\ resposta \\ 3x {}^{2} - 2x + 12$