Question

Multiplicar los siguientes polinomios:

(7x2 - x + 1); (3x² + x - 1)

21x4 – 4x2 + 5x2 + 2x + 1
21x4 + 4r? – 5.x2 + 2x
21x4 + 4x3 – 5.x2 + 2x – 1

me ayudan porfa

Answer 1

Explicación paso a paso:

$(7 {x}^{2} - x + 1)(3 {x}^{2} + x - 1) \\ = 21 {x}^{4} + 7 {x}^{3} - 7 {x}^{2} - 3 {x}^{3} - {x}^{2} + x + 3 {x}^{2} + x - 1 \\ = 21 {x}^{4} + 4 {x}^{3} - 5 {x}^{2} + 2x - 1$