Question

C. (3x2 - x - 1) (-2x + 1)
d. (-2x2 - 2x - 1) (x2 - x + 5)
e. X (2x - y) - (2x + y) (2x - y)​

Answer 1

Explicación paso a paso:

c.

(3x² - x - 1) (-2x + 1)

(3x²)(-2x)+(3x²)(1)+(-x)(-2x)+(-x)(1)+(-1)(-2x)+(-1)(1)

-6x³ + 3x² + 2x² -x +2x -1

-6x³ + 5x² +x -1

d.

(-2x² - 2x - 1) (x² - x + 5)

(-2x²)(x²)+(-2x²)(-x)+(-2x²)(5)+(-2x)(x²)+(-2x)(-x)+(-2x)(5)+(-1)(x²)+(-1)(-x)+(-1)(5)

-2x⁴+2x³-10x²-2x³+2x²-10x - x²+x-5

-2x⁴+2x³-2x³-10x²+2x² - x²-10x+x-5

-2x⁴-9x²-9x-5

e.

x(2x - y) - (2x + y) (2x - y)​

(2x² - xy) - (4x² - y²)

2x² - xy - 4x² + y²

2x²- 4x² - xy+ y²

-2x² -  xy+ y²