Question

(5x - 9) X (x² - 3x + 6) =

(x²) X (x + 1) =

(x + 2) X (x² - x - 1) =

(x - 1) X (x² - x + 9) =

(x + 1) X (x² + x + 3) =

(6x + 1) X (x² - x + 3) =

(5x - 1) X (x² + x - 3) =

(6x + 2) X (x² + 9x - 3) =

(7x) X (x² - x + 1 ) =​

Answer 1

Resposta:

1) (5x-9)(x2-3x+6)=

5x3-9x2-15x2+27x+30x-54=

5x3-24x2+57x-54

2)(x2) (x+1)=

x3+x2.

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

x3+2x2--x2-2x-x-2=

x3+x2-3x-2

4)(x-1)(x2-x+9)=

x3-x2-x2+x+9x-9=

x3-x2-x2+10x-9=

x3-2x2+10x-9

5) (x +1)(X2+x+3)=

x3+X2+X2+x+3x+3=

x3+2x2+4x+3

6)(6x+1)(x2-x+3)=

6x3+x2-6x2-x+18x+3

6x3-5x2+17x+3

7)(5x-1)(X2+x-3)=

5x3-x2+5x2-x-15x+3=

5x3+4x2-16x+3

8)(6x+2)(X2+9x-3)=

6x3+2x2+54x2+18x-18x-6=

6x3+56x2-6

9)(7x)(x2-x+1)=

7x3-7x2+7x