Question

urgente me ajuda porfavor
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Answer 1

Resposta:

9)

p + q × r

$p + q \times r = {x}^{3} - 2 {x}^{2} + x + (2x - 1)(x + 1) \\ p + q \times r = {x}^{3} - 2 {x}^{2} + x + (2 {x}^{1 + 1} + 2x - x - 1)\\ p + q \times r = {x}^{3} - 2 {x}^{2} + x + 2 {x}^{2} + x - 1 \\ p + q \times r = {x}^{3} - 2 {x}^{2} + 2 {x}^{2} + x + x - 1 \\ p + q \times r = {x}^{3} + 2x - 1$

10)

P(x) ÷ D(x) = Q(x)

R(x)

P(x) = Q(x) × D(x) + R(x)

$p(x) = ( {x}^{2} + 2x - 3)(5 {x}^{2} - 3x + 1) + (- 5x + 2) \\ \\ p(x) = 5 {x}^{2 + 2} - 3 {x}^{2 + 1} + {x}^{2} + 10 {x}^{1 + 2 } - 6 {x}^{1 + 1} + 2x - 15 {x}^{2} + 9x - 3 - 5x + 2 \\ \\ p(x) = 5 {x}^{4} - 3 {x}^{3} + {x}^{2} + 10 {x}^{3} - 6 {x}^{2} + 2x - 15 {x}^{2} + 4x - 1 \\ \\ p(x) = 5 {x}^{4} + 7 {x}^{3} - 20 {x}^{2} + 6x - 1$

Bons Estudos!